DTC Advanced Diagnostics: Electric Parking Brake related DTCs (2017 2018 2019 2020)

Electric Parking Brake System Related DTCs

NOTE

Review "How to troubleshoot the electric parking brake" before doing the DTC troubleshooting procedure.
Test-drive the vehicle according to local traffic conditions and regulations. Do not test-drive on a lift unless specified.
The possible causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.

DTC B0050-F0: Driver's Seat Belt Buckle Switch Malfunction

Confirmation Procedure	Basic Condition: 12 volt battery voltage 9 - 16 V With the Driving Pattern: 1. Turn the vehicle to the ON mode.
Duration	-
DTC Type	1 drive cycle Electric parking brake system indicator on Electric parking brake indicator flash
Fail Safe Action	Stop electric parking brake function (some of function)
Possible Cause	Driver's seat belt buckle (seat belt buckle switch) failure Open between the SRS unit and the driver's seat belt buckle (seat belt buckle switch) SRS unit internal failure

DTC C0031-62: Left-Front Wheel Speed Sensor Malfunction

Confirmation Procedure	Basic Condition: 12 volt battery voltage 9 - 16 V With the Driving Pattern: 1. Turn the vehicle to the ON mode.
Duration	-
DTC Type	1 drive cycle Electric parking brake system indicator on Electric parking brake indicator flash
Fail Safe Action	None
Possible Cause	Left-front wheel speed sensor failure VSA modulator-control unit internal failure

DTC C0034-62: Right-Front Wheel Speed Sensor Malfunction

Confirmation Procedure	Basic Condition: 12 volt battery voltage 9 - 16 V With the Driving Pattern: 1. Turn the vehicle to the ON mode.
Duration	-
DTC Type	1 drive cycle Electric parking brake system indicator on Electric parking brake indicator flash
Fail Safe Action	None
Possible Cause	Right-front wheel speed sensor failure VSA modulator-control unit internal failure

DTC C0037-62: Left-Rear Wheel Speed Sensor Malfunction

Confirmation Procedure	Basic Condition: 12 volt battery voltage 9 - 16 V With the Driving Pattern: 1. Turn the vehicle to the ON mode.
Duration	-
DTC Type	1 drive cycle Electric parking brake system indicator on Electric parking brake indicator flash
Fail Safe Action	Stop electric parking brake function (some of function)
Possible Cause	Left-rear wheel speed sensor failure VSA modulator-control unit internal failure

DTC C003A-62: Right-Rear Wheel Speed Sensor Malfunction

Confirmation Procedure	Basic Condition: 12 volt battery voltage 9 - 16 V With the Driving Pattern: 1. Turn the vehicle to the ON mode.
Duration	-
DTC Type	1 drive cycle Electric parking brake system indicator on Electric parking brake indicator flash
Fail Safe Action	Stop electric parking brake function (some of function)
Possible Cause	Right-rear wheel speed sensor failure VSA modulator-control unit internal failure

DTC C0062-1C: Longitudinal Acceleration Sensor (Inside of Electric Parking Brake Control Unit) Range/Performance Problem

Confirmation Procedure	Basic Condition: 12 volt battery voltage 9 - 16 V With the Driving Pattern: 1. Start the engine. 2. Accelerate the vehicle.
Duration	-
DTC Type	1 drive cycle Electric parking brake system indicator on Electric parking brake indicator flash
Fail Safe Action	Stop electric parking brake function (some of function)
Possible Cause	Electric parking brake control unit misinstalled Electric parking brake control unit internal failure (Longitudinal acceleration sensor)

DTC C0062-54: Longitudinal Acceleration Sensor (Inside of Electric Parking Brake Control Unit) Neutral Position Not Learned

Confirmation Procedure	Basic Condition: 12 volt battery voltage 9 - 16 V With the Driving Pattern: 1. Turn the vehicle to the ON mode.
Duration	-
DTC Type	1 drive cycle Electric parking brake system indicator flash Electric parking brake indicator flash
Fail Safe Action	Stop electric parking brake function (some of function)
Possible Cause	Longitudinal acceleration sensor neutral position memorization not learned

DTC C0062-76: Longitudinal Acceleration Sensor (Inside of Electric Parking Brake Control Unit) Adjustment Condition Incorrect

Confirmation Procedure	Basic Condition: 12 volt battery voltage 9 - 16 V With the Driving Pattern: 1. Turn the vehicle to the ON mode.
Duration	-
DTC Type	1 drive cycle Electric parking brake system indicator on Electric parking brake indicator flash
Fail Safe Action	Stop electric parking brake function (some of function)
Possible Cause	Longitudinal acceleration sensor neutral position memorization not learned Electric parking brake control unit misinstalled Electric parking brake control unit internal failure (Longitudinal acceleration sensor)

DTC C1100-53: Electric Parking Brake System in Maintenance Mode

Confirmation Procedure	Basic Condition: 12 volt battery voltage 9 - 16 V With the Driving Pattern: 1. Turn the vehicle to the ON mode.
Duration	-
DTC Type	1 drive cycle Electric parking brake system indicator on Electric parking brake indicator flash
Fail Safe Action	Stop electric parking brake function
Possible Cause	While performing BRAKE PAD MAINTENANCE MODE

DTC C1100-54: Piston Position Not Learned

Confirmation Procedure	Basic Condition: 12 volt battery voltage 9 - 16 V With the Driving Pattern: 1. Turn the vehicle to the ON mode.
Duration	-
DTC Type	1 drive cycle Electric parking brake system indicator on Electric parking brake indicator flash
Fail Safe Action	Stop electric parking brake function (some of function)
Possible Cause	Piston position not learned

DTC C1100-94: Electric Parking Brake Actuator Malfunction

Confirmation Procedure	Basic Condition: 12 volt battery voltage 9 - 16 V With the Driving Pattern: 1. Turn the vehicle to the ON mode.
Duration	-
DTC Type	1 drive cycle Electric parking brake system indicator on Electric parking brake indicator flash
Fail Safe Action	Stop electric parking brake function (some of function)
Possible Cause	Open, Short to ground, or Short to power between the electric parking brake control unit and the electric parking brake actuator (R EPB SET, R EPB REL, L EPB SET, L EPB REL lines) Electric parking brake control unit internal failure

DTC C1110-11: Left-Rear Electric Parking Brake Actuator Circuit Short to Ground

Confirmation Procedure	Basic Condition: 12 volt battery voltage 9 - 16 V With the Driving Pattern: 1. Turn the vehicle to the ON mode. 2. Apply the parking brake, then press the brake pedal and release the parking brake.
Duration	-
DTC Type	1 drive cycle Electric parking brake system indicator on Electric parking brake indicator flash
Fail Safe Action	Stop electric parking brake function (some of function)
Possible Cause	Short to ground between the electric parking brake control unit and the left electric parking brake actuator (L EPB SET, L EPB REL lines) Left electric parking brake actuator failure

DTC C1110-12: Left-Rear Electric Parking Brake Actuator Circuit Short to Power

Confirmation Procedure	Basic Condition: 12 volt battery voltage 9 - 16 V With the Driving Pattern: 1. Turn the vehicle to the ON mode. 2. Apply the parking brake, then press the brake pedal and release the parking brake.
Duration	-
DTC Type	1 drive cycle Electric parking brake system indicator on Electric parking brake indicator flash
Fail Safe Action	Stop electric parking brake function (some of function)
Possible Cause	Short to power between the electric parking brake control unit and the left electric parking brake actuator (L EPB SET, L EPB REL lines)

DTC C1110-13: Left-Rear Electric Parking Brake Actuator Circuit Open

Confirmation Procedure	Basic Condition: 12 volt battery voltage 9 - 16 V With the Driving Pattern: 1. Turn the vehicle to the ON mode. 2. Apply the parking brake, then press the brake pedal and release the parking brake.
Duration	-
DTC Type	1 drive cycle Electric parking brake system indicator on Electric parking brake indicator flash
Fail Safe Action	Stop electric parking brake function (some of function)
Possible Cause	Open between the electric parking brake control unit and the left electric parking brake actuator (L EPB SET, L EPB REL lines) Open between the electric parking brake control unit and the rear fuse/relay box (+B L EPB MTR line) Blown fuse (Rear fuse/relay box No. F16 (30 A)) Left electric parking brake actuator failure

DTC C1110-96: Left-Rear Electric Parking Brake Actuator Malfunction

Confirmation Procedure	Basic Condition: 12 volt battery voltage 9 - 16 V With the Driving Pattern: 1. Turn the vehicle to the ON mode. 2. Apply the parking brake, then press the brake pedal and release the parking brake.
Duration	-
DTC Type	1 drive cycle Electric parking brake system indicator on Electric parking brake indicator flash
Fail Safe Action	Stop electric parking brake function (some of function)
Possible Cause	Overcurrent between the electric parking brake control unit and the left electric parking brake actuator (L EPB SET, L EPB REL lines) Left electric parking brake actuator failure Electric parking brake control unit internal failure

DTC C1111-11: Right-Rear Electric Parking Brake Actuator Circuit Short to Ground

Confirmation Procedure	Basic Condition: 12 volt battery voltage 9 - 16 V With the Driving Pattern: 1. Turn the vehicle to the ON mode. 2. Apply the parking brake, then press the brake pedal and release the parking brake.
Duration	-
DTC Type	1 drive cycle Electric parking brake system indicator on Electric parking brake indicator flash
Fail Safe Action	Stop electric parking brake function (some of function)
Possible Cause	Short to ground between the electric parking brake control unit and the right electric parking brake actuator (R EPB SET, R EPB REL lines) Right electric parking brake actuator failure

DTC C1111-12: Right-Rear Electric Parking Brake Actuator Circuit Short to Power

Confirmation Procedure	Basic Condition: 12 volt battery voltage 9 - 16 V With the Driving Pattern: 1. Turn the vehicle to the ON mode. 2. Apply the parking brake, then press the brake pedal and release the parking brake.
Duration	-
DTC Type	1 drive cycle Electric parking brake system indicator on Electric parking brake indicator flash
Fail Safe Action	Stop electric parking brake function (some of function)
Possible Cause	Short to power between the electric parking brake control unit and the right electric parking brake actuator (R EPB SET, R EPB REL lines)

DTC C1111-13: Right-Rear Electric Parking Brake Actuator Circuit Open

Confirmation Procedure	Basic Condition: 12 volt battery voltage 9 - 16 V With the Driving Pattern: 1. Turn the vehicle to the ON mode. 2. Apply the parking brake, then press the brake pedal and release the parking brake.
Duration	-
DTC Type	1 drive cycle Electric parking brake system indicator on Electric parking brake indicator flash
Fail Safe Action	Stop electric parking brake function (some of function)
Possible Cause	Open between the electric parking brake control unit and the right electric parking brake actuator (R EPB SET, R EPB REL lines) Open between the electric parking brake control unit and the rear fuse/relay box (+B R EPB MTR line) Blown fuse (Rear fuse/relay box No. F15 (30 A)) Right electric parking brake actuator failure

DTC C1111-96: Right-Rear Electric Parking Brake Actuator Malfunction

Confirmation Procedure	Basic Condition: 12 volt battery voltage 9 - 16 V With the Driving Pattern: 1. Turn the vehicle to the ON mode. 2. Apply the parking brake, then press the brake pedal and release the parking brake.
Duration	-
DTC Type	1 drive cycle Electric parking brake system indicator on Electric parking brake indicator flash
Fail Safe Action	Stop electric parking brake function (some of function)
Possible Cause	Overcurrent between the electric parking brake control unit and the right electric parking brake actuator (R EPB SET, R EPB REL lines) Right electric parking brake actuator failure Electric parking brake control unit internal failure

DTC C1120-14: Electric Parking Brake Switch Circuit Malfunction

Confirmation Procedure	Basic Condition: 12 volt battery voltage 9 - 16 V With the Driving Pattern: 1. Turn the vehicle to the ON mode.
Duration	-
DTC Type	1 drive cycle Electric parking brake system indicator on Electric parking brake indicator flash
Fail Safe Action	Stop electric parking brake function (some of function)
Possible Cause	Open or Short to ground between the electric parking brake control unit and the electric parking brake switch (EPB SW1, EPB SW2, EPB SW3, EPB SW4 lines) Electric parking brake switch failure Electric parking brake control unit internal failure

DTC C1120-96: Electric Parking Brake Switch Malfunction

Confirmation Procedure	Basic Condition: 12 volt battery voltage 9 - 16 V With the Driving Pattern: 1. Turn the vehicle to the ON mode. 2. Wait 20 seconds or more.
Duration	-
DTC Type	1 drive cycle Electric parking brake system indicator on Electric parking brake indicator flash
Fail Safe Action	Stop electric parking brake function (some of function)
Possible Cause	Electric parking brake switch failure

DTC C1131-12: Electric Parking Brake Indicator Circuit Short (ECU Internal Circuit Malfunction)

Confirmation Procedure	Basic Condition: 12 volt battery voltage 9 - 16 V With the Driving Pattern: 1. Turn the vehicle to the ON mode. 2. Apply the parking brake, then press the brake pedal and release the parking brake. 3. Wait 20 seconds or more.
Duration	-
DTC Type	1 drive cycle Electric parking brake system indicator on
Fail Safe Action	None
Possible Cause	Electric parking brake control unit internal failure

DTC U0029-00: F-CAN Malfunction (Bus-Off)

Confirmation Procedure	Basic Condition: 12 volt battery voltage 9 - 16 V With the Driving Pattern: 1. Turn the vehicle to the ON mode.
Duration	-
DTC Type	1 drive cycle Electric parking brake system indicator on Electric parking brake indicator flash
Fail Safe Action	Stop electric parking brake function (some of function)
Possible Cause	Open, Short to another line, or Poor connection between the electric parking brake control unit and other control units (F-CAN lines) Internal failure of other unit on F-CAN Electric parking brake control unit internal failure

DTC U0100-00: F-CAN Malfunction (Electric Parking Brake Control Unit-PCM)

Confirmation Procedure	Basic Condition: 12 volt battery voltage 9 - 16 V With the Driving Pattern: 1. Turn the vehicle to the ON mode.
Duration	-
DTC Type	1 drive cycle Electric parking brake system indicator on Electric parking brake indicator flash
Fail Safe Action	Stop electric parking brake function (some of function)
Possible Cause	Open between the electric parking brake control unit and the PCM (F-CAN lines) PCM internal failure Electric parking brake control unit internal failure

DTC U0101-00: F-CAN Malfunction (Electric Parking Brake Control Unit-TCM)

Confirmation Procedure	Basic Condition: 12 volt battery voltage 9 - 16 V With the Driving Pattern: 1. Turn the vehicle to the ON mode.
Duration	-
DTC Type	1 drive cycle Electric parking brake system indicator on
Fail Safe Action	Stop electric parking brake function (some of function) Electric parking brake indicator flash
Possible Cause	Open between the electric parking brake control unit and the TCM (F-CAN lines) TCM internal failure Electric parking brake control unit internal failure

DTC U0122-00: F-CAN Malfunction (Electric Parking Brake Control Unit-VSA Modulator-Control unit)

Confirmation Procedure	Basic Condition: 12 volt battery voltage 9 - 16 V With the Driving Pattern: 1. Turn the vehicle to the ON mode.
Duration	-
DTC Type	1 drive cycle Electric parking brake system indicator on Electric parking brake indicator flash
Fail Safe Action	Stop electric parking brake function (some of function)
Possible Cause	Open between the electric parking brake control unit and the VSA modulator-control unit (F-CAN lines) VSA modulator-control unit internal failure Electric parking brake control unit internal failure

DTC U0151-00: F-CAN Malfunction (Electric Parking Brake Control Unit-SRS Unit)

Confirmation Procedure	Basic Condition: 12 volt battery voltage 9 - 16 V With the Driving Pattern: 1. Turn the vehicle to the ON mode.
Duration	-
DTC Type	1 drive cycle Electric parking brake system indicator on Electric parking brake indicator flash
Fail Safe Action	Stop electric parking brake function (some of function)
Possible Cause	Open between the electric parking brake control unit and the SRS unit (F-CAN lines) SRS unit internal failure Electric parking brake control unit internal failure

DTC U0155-00: F-CAN Malfunction (Electric Parking Brake Control Unit-Gauge Control Module)

Confirmation Procedure	Basic Condition: 12 volt battery voltage 9 - 16 V With the Driving Pattern: 1. Turn the vehicle to the ON mode.
Duration	-
DTC Type	1 drive cycle Electric parking brake system indicator on Electric parking brake indicator flash
Fail Safe Action	None
Possible Cause	Open between the electric parking brake control unit and the gauge control module (F-CAN lines) Gauge control module internal failure Electric parking brake control unit internal failure

DTC U0401-68: PCM Malfunction

Confirmation Procedure	Basic Condition: 12 volt battery voltage 9 - 16 V With the Driving Pattern: 1. Turn the vehicle to the ON mode.
Duration	-
DTC Type	1 drive cycle Electric parking brake system indicator on Electric parking brake indicator flash
Fail Safe Action	Stop electric parking brake function (some of function)
Possible Cause	PGM-FI system failure PCM internal failure Electric parking brake control unit internal failure

DTC U0402-68: TCM Malfunction

Confirmation Procedure	Basic Condition: 12 volt battery voltage 9 - 16 V With the Driving Pattern: 1. Turn the vehicle to the ON mode.
Duration	-
DTC Type	1 drive cycle Electric parking brake system indicator on Electric parking brake indicator flash
Fail Safe Action	Stop electric parking brake function (some of function)
Possible Cause	A/T system failure TCM internal failure Electric parking brake control unit internal failure

DTC U0416-68: VSA System Malfunction

Confirmation Procedure	Basic Condition: 12 volt battery voltage 9 - 16 V With the Driving Pattern: 1. Turn the vehicle to the ON mode.
Duration	-
DTC Type	1 drive cycle Electric parking brake system indicator on Electric parking brake indicator flash
Fail Safe Action	Stop electric parking brake function (some of function)
Possible Cause	VSA system failure VSA modulator-control internal failure Electric parking brake control unit internal failure

DTC U0416-F8: VSA System Malfunction

Confirmation Procedure	Basic Condition: 12 volt battery voltage 9 - 16 V With the Driving Pattern: 1. Turn the vehicle to the ON mode.
Duration	-
DTC Type	1 drive cycle Electric parking brake system indicator on Electric parking brake indicator flash
Fail Safe Action	None
Possible Cause	VSA system failure VSA modulator-control unit internal failure Electric parking brake control unit internal failure

DTC U3000-49: Electric Parking Brake Control Unit Internal Circuit Malfunction

Confirmation Procedure	Basic Condition: 12 volt battery voltage 9 - 16 V With the Driving Pattern: 1. Turn the vehicle to the ON mode.
Duration	-
DTC Type	1 drive cycle Electric parking brake system indicator on Electric parking brake indicator flash
Fail Safe Action	Stop electric parking brake function
Possible Cause	Electric parking brake control unit internal failure

DTC U3000-51: Electric Parking Brake Control Unit Programming Error

Confirmation Procedure	Basic Condition: 12 volt battery voltage 9 - 16 V With the Driving Pattern: 1. Turn the vehicle to the ON mode.
Duration	-
DTC Type	1 drive cycle Electric parking brake system indicator on
Fail Safe Action	Stop electric parking brake function
Possible Cause	Electric parking brake control unit program not the latest

DTC U3003-16: Electric Parking Brake Control Unit Power Source Circuit (+B) Low Voltage

Confirmation Procedure	Basic Condition: 12 volt battery voltage 9 - 16 V With the Driving Pattern: 1. Turn the vehicle to the ON mode.
Duration	-
DTC Type	1 drive cycle Electric parking brake system indicator on Electric parking brake indicator flash
Fail Safe Action	Stop electric parking brake function
Possible Cause	Abnormal 12 volt battery Alternator failure Electric parking brake control unit internal failure

DTC U3003-17: Electric Parking Brake Control Unit Power Source Circuit (+B) High Voltage

Confirmation Procedure	Basic Condition: 12 volt battery voltage 9 - 16 V With the Driving Pattern: 1. Turn the vehicle to the ON mode.
Duration	-
DTC Type	1 drive cycle Electric parking brake system indicator on Electric parking brake indicator flash
Fail Safe Action	Stop electric parking brake function
Possible Cause	Abnormal 12 volt battery Alternator failure Electric parking brake control unit internal failure

DTC U3003-68: Electric Parking Brake Control Unit Internal Circuit Malfunction (Power Self-Holding Circuit)

Confirmation Procedure	Basic Condition: 12 volt battery voltage 9 - 16 V With the Driving Pattern: 1. Turn the vehicle to the ON mode.
Duration	-
DTC Type	1 drive cycle None
Fail Safe Action	None
Possible Cause	Blown fuse (Rear fuse/relay box No. F15 (30 A) and No. F16 (30 A)) Open or Short to ground between the electric parking brake control unit and the main rear fuse/relay box (+B L EPB MTR, +B R EPB MTR lines) Open between the electric parking brake control unit and ground (PGND line) Electric parking brake control unit internal failure

DTC U3006-13: IG1 Circuit Open

Confirmation Procedure	Basic Condition: 12 volt battery voltage above 9 - 16 V With the Driving Pattern: 1. Turn the vehicle to the ON mode.
Duration	-
DTC Type	1 drive cycle Electric parking brake system indicator on
Fail Safe Action	None
Possible Cause	Open between the electric parking brake control unit and the rear fuse/relay box (IG1 ECU RR line) Blown fuse (Rear fuse/relay box No. F13 (7. 5 A)) Electric parking brake control unit internal failure