DTC U0101, U0103, U0122, U0126, U0131, U0151, U0155, U1101, U129E

NOTE: 

• Before you troubleshoot, review the general troubleshooting information - Refer to: How to Troubleshoot the Fuel and Emissions Systems .
• Before disconnecting the SRS unit connector, do the 12 volt battery terminal disconnection procedure and wait for at least 3 minutes.
• Refer to the DTC code shown on the display, and then inspect the connectors and terminals based on the instructions in the table below.
• The DTC may be stored due to the grounding failure or the power source failure at the transmitting control unit.

  (the grounding inspection and the power source inspection on each control unit are required prior to this checking process)

DTC (PGM-FI)

1. Problem verification

   - 1. Turn the vehicle to the ON mode.

   - 2. Clear the DTC with the HDS.

   - 3. Turn the vehicle to the OFF (LOCK) mode.

   - 4. Turn the vehicle to the ON mode.

   - 5. Check for Pending or Confirmed DTCs with the HDS.

   DTC Description	Confirmed DTC	Pending DTC
   U0101 F-CAN Malfunction (Powertrain Control Module (PCM)-Transmission Control Module (TCM))
   U0103 F-CAN Malfunction (Powertrain Control Module (PCM)-SBW Shifter)
   U0122 F-CAN Malfunction (Powertrain Control Module (PCM)-VSA Modulator-Control Unit)
   U0126 F-CAN Malfunction (Powertrain Control Module (PCM) -Steering Angle Sensor)
   U0131 F-CAN Malfunction (Powertrain Control Module (PCM)-EPS Control Unit)
   U0151 F-CAN Malfunction (Powertrain Control Module (PCM)-SRS Unit)

   DTC Description	Confirmed DTC	Pending DTC
   U0155 F-CAN Malfunction (Powertrain Control Module (PCM)-Gauge Control Module)
   U1101F-CAN Malfunction (Powertrain Control Module (PCM)-Active Control Engine Mount (ACM))
   U129E F-CAN Malfunction (Powertrain Control Module (PCM)-Power Control Unit (PCU))

   Are any of the DTC's listed indicated?

   YES 

   The failure is duplicated. Go to step 2.

   NO 

   Intermittent failure, the system is OK at this time.

   Check for poor connections or loose terminals at the transmitting control units, and the PCM.

   If the on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the on-board snapshot - Refer to: How to Troubleshoot the Fuel and Emissions Systems .

2. Open wire check (F-CAN A_L, F-CAN A_H lines)

   - 1. Turn the vehicle to the OFF (LOCK) mode.

   - 2. Disconnect the receiving control unit connector.

   NOTE:  Jump the SCS line with the HDS, and wait more than 1 minute before removing the PCM connector (s).

   PCM connector A (50P)

   - 3. Disconnect the transmitting control unit connectors.

   (Refer to the DTC code shown on the display, and then disconnect the connector (s) based on the instructions in the table below.)

   DTC	Connector
   U0101	TCM 58P connector
   U0103	SBW shifter control module 20P connector
   U0122	VSA modulator-control unit 38P connector
   U0126	Steering angle sensor 4 connector
   U0131	EPS control unit connector B (8P)
   U0151	SRS unit connector A (39P)
   U0155	Gauge control module connector A (32P)
   U1101	Engine mount control unit 16P connector
   U129E	Keyless access/TPMS control unit connector C (20P)

   - 4. Check for continuity between the receiving control unit and the transmitting control unit on the F-CAN A_H circuit and the F-CAN A_L circuit.

   Test condition	Vehicle OFF (LOCK) mode
   	Receiving control unit: disconnected

   DTC	CIRCUIT NAME	RECEIVING CONTROL UNIT	TRANSMITTING CONTROL UNIT
   U0101F-CAN Malfunction (Powertrain Control Module (PCM)-Transmission Control Module (TCM))	F-CAN A_H	PCM connector A (50P) No. 11 - Refer to: PCM Connector for Inputs and Outputs (9-Speed A/T) (2016 2017 2018), or PCM Connector for Inputs and Outputs (9-Speed A/T) (2019 2020 2021), or PCM Connector for Inputs and Outputs (6-Speed A/T)	TCM 58P connector No. 34 - Refer to: A/T Control System Connector For Inputs And Outputs (2016 2017 2018 2019 2020: 6-Speed A/T) A/T Control System Connector For Inputs And Outputs (2020 2021: 9-speed A/T), or A/T Control System Connector For Inputs And Outputs (2016 2017 2018: 9-Speed A/T), or A/T Control System Connector For Inputs And Outputs (2019: 9-Speed A/T)
   	F-CAN A_L	PCM connector A (50P) No. 10 - Refer to: PCM Connector for Inputs and Outputs (9-Speed A/T) (2019 2020 2021), or PCM Connector for Inputs and Outputs (6-Speed A/T), or PCM Connector for Inputs and Outputs (9-Speed A/T) (2016 2017 2018)	TCM 58P connector No. 47 - Refer to: A/T Control System Connector For Inputs And Outputs (2016 2017 2018 2019 2020: 6-Speed A/T) A/T Control System Connector For Inputs And Outputs (2020 2021: 9-speed A/T), or A/T Control System Connector For Inputs And Outputs (2019: 9-Speed A/T), or A/T Control System Connector For Inputs And Outputs (2016 2017 2018: 9-Speed A/T)
   U0103F-CAN Malfunction (Powertrain Control Module (PCM)-SBW Shifter)	F-CAN A_H	PCM connector A (51P) No. 11 - Refer to: PCM Connector for Inputs and Outputs (9-Speed A/T) (2016 2017 2018), or PCM Connector for Inputs and Outputs (9-Speed A/T) (2019 2020 2021), or PCM Connector for Inputs and Outputs (6-Speed A/T)	SBW shifter control module 20P connector No. 5 - Refer to: A/T Control System Connector For Inputs And Outputs (2016 2017 2018 2019 2020: 6-Speed A/T) A/T Control System Connector For Inputs And Outputs (2016 2017 2018: 9-Speed A/T), or A/T Control System Connector For Inputs And Outputs (2019: 9-Speed A/T), or A/T Control System Connector For Inputs And Outputs (2020 2021: 9-speed A/T)
   	F-CAN A_L	PCM connector A (50P) No. 10 - Refer to: PCM Connector for Inputs and Outputs (9-Speed A/T) (2019 2020 2021), or PCM Connector for Inputs and Outputs (6-Speed A/T), or PCM Connector for Inputs and Outputs (9-Speed A/T) (2016 2017 2018)	SBW shifter control module 20P connector No. 6 - Refer to: A/T Control System Connector For Inputs And Outputs (2016 2017 2018 2019 2020: 6-Speed A/T) A/T Control System Connector For Inputs And Outputs (2019: 9-Speed A/T), or A/T Control System Connector For Inputs And Outputs (2016 2017 2018: 9-Speed A/T), or A/T Control System Connector For Inputs And Outputs (2020 2021: 9-speed A/T)
   U0122 F-CAN Malfunction (Powertrain Control Module (PCM)-VSA Modulator-Control Unit)	F-CAN A_H	PCM connector A (50P) No. 11 - Refer to: PCM Connector for Inputs and Outputs (9-Speed A/T) (2016 2017 2018), or PCM Connector for Inputs and Outputs (9-Speed A/T) (2019 2020 2021), or PCM Connector for Inputs and Outputs (6-Speed A/T)	VSA modulator-control unit 38P connector No. 6 - Refer to: VSA Modulator-Control Unit Connector for Inputs and Outputs (2019 2020 2021), or VSA Modulator-Control Unit Connector for Inputs and Outputs (2016 2017 2018)
   	F-CAN A_L	PCM connector A (50P) No. 10 - Refer to: PCM Connector for Inputs and Outputs (9-Speed A/T) (2016 2017 2018), or PCM Connector for Inputs and Outputs (9-Speed A/T) (2019 2020 2021), or PCM Connector for Inputs and Outputs (6-Speed A/T)	VSA modulator-control unit 38P connector No. 7 - Refer to: VSA Modulator-Control Unit Connector for Inputs and Outputs (2016 2017 2018), or VSA Modulator-Control Unit Connector for Inputs and Outputs (2019 2020 2021)
   U0126F-CAN Malfunction (Powertrain Control Module (PCM) -Steering Angle Sensor)	F-CAN A_H	PCM connector A (50P) No. 11 - Refer to: PCM Connector for Inputs and Outputs (9-Speed A/T) (2016 2017 2018), or PCM Connector for Inputs and Outputs (9-Speed A/T) (2019 2020 2021), or PCM Connector for Inputs and Outputs (6-Speed A/T)	Steering angle sensor 4 connector: No. 2
   	F-CAN A_L	PCM connector A (50P) No. 10 - Refer to: PCM Connector for Inputs and Outputs (9-Speed A/T) (2016 2017 2018), or PCM Connector for Inputs and Outputs (9-Speed A/T) (2019 2020 2021), or PCM Connector for Inputs and Outputs (6-Speed A/T)	Steering angle sensor 4 connector: No. 3
   U0131F-CAN Malfunction (Powertrain Control Module (PCM)-EPS Control Unit)	F-CAN A_H	PCM connector A (50P) No. 11 - Refer to: PCM Connector for Inputs and Outputs (9-Speed A/T) (2016 2017 2018), or PCM Connector for Inputs and Outputs (9-Speed A/T) (2019 2020 2021), or PCM Connector for Inputs and Outputs (6-Speed A/T)	EPS control unit connector B (8P) No. 3 - Refer to: EPS Control Unit Connector for Inputs and Outputs (2019 2020 2021), or EPS Control Unit Connector for Inputs and Outputs (2016 2017 2018)
   	F-CAN A_L	PCM connector A (50P) No. 10 - Refer to: PCM Connector for Inputs and Outputs (9-Speed A/T) (2019 2020 2021), or PCM Connector for Inputs and Outputs (6-Speed A/T), or PCM Connector for Inputs and Outputs (9-Speed A/T) (2016 2017 2018)	EPS control unit connector B (8P) No. 8 - Refer to: EPS Control Unit Connector for Inputs and Outputs (2019 2020 2021), or EPS Control Unit Connector for Inputs and Outputs (2016 2017 2018)
   U0151 F-CAN Malfunction (Powertrain Control Module (PCM)-SRS Unit)	F-CAN A_H	PCM connector A (50P) No. 11 - Refer to: PCM Connector for Inputs and Outputs (9-Speed A/T) (2019 2020 2021), or PCM Connector for Inputs and Outputs (6-Speed A/T), or PCM Connector for Inputs and Outputs (9-Speed A/T) (2016 2017 2018)	SRS unit connector A (39P) No. 34 - Refer to: SRS Unit Connector for Inputs and Outputs (2019 2020 2021), or SRS Unit Connector for Inputs and Outputs (2016), or SRS Unit Connector for Inputs and Outputs (2017 2018)
   	F-CAN A_L	PCM connector A (50P) No. 10 - Refer to: PCM Connector for Inputs and Outputs (9-Speed A/T) (2019 2020 2021), or PCM Connector for Inputs and Outputs (6-Speed A/T), or PCM Connector for Inputs and Outputs (9-Speed A/T) (2016 2017 2018)	SRS unit connector A (39P) No. 35 - Refer to: SRS Unit Connector for Inputs and Outputs (2016), or SRS Unit Connector for Inputs and Outputs (2017 2018), or SRS Unit Connector for Inputs and Outputs (2019 2020 2021)
   U0155 F-CAN Malfunction (Powertrain Control Module (PCM)-Gauge Control Module)	F-CAN A_H	PCM connector A (50P) No. 11 - Refer to: PCM Connector for Inputs and Outputs (9-Speed A/T) (2016 2017 2018), or PCM Connector for Inputs and Outputs (9-Speed A/T) (2019 2020 2021), or PCM Connector for Inputs and Outputs (6-Speed A/T)	Gauge control module connector (32P) No. 19 - Refer to: Gauge Control Module Connector for Inputs and Outputs (2020 2021), or Gauge Control Module Connector for Inputs and Outputs (2016 2017 2018), or Gauge Control Module Connector for Inputs and Outputs (2019)
   	F-CAN A_L	PCM connector A (50P) No. 10 - Refer to: PCM Connector for Inputs and Outputs (9-Speed A/T) (2016 2017 2018), or PCM Connector for Inputs and Outputs (9-Speed A/T) (2019 2020 2021), or PCM Connector for Inputs and Outputs (6-Speed A/T)	Gauge control module connector A (32P) No. 20 - Refer to: Gauge Control Module Connector for Inputs and Outputs (2016 2017 2018), or Gauge Control Module Connector for Inputs and Outputs (2020 2021), or Gauge Control Module Connector for Inputs and Outputs (2019)
   U1101 F-CAN Malfunction (Powertrain Control Module (PCM)-Active Control Engine Mount (ACM))	F-CAN A_H	PCM connector A (50P) No. 11 - Refer to: PCM Connector for Inputs and Outputs (9-Speed A/T) (2016 2017 2018), or PCM Connector for Inputs and Outputs (9-Speed A/T) (2019 2020 2021), or PCM Connector for Inputs and Outputs (6-Speed A/T)	Engine mount control unit 16P connector No. 13
   	F-CAN A_L	PCM connector A (50P) No. 10 - Refer to: PCM Connector for Inputs and Outputs (9-Speed A/T) (2016 2017 2018), or PCM Connector for Inputs and Outputs (9-Speed A/T) (2019 2020 2021), or PCM Connector for Inputs and Outputs (6-Speed A/T)	Engine mount control unit 16P connector No. 15
   U129E F-CAN Malfunction (Powertrain Control Module (PCM)-Power Control Unit (PCU))	F-CAN A_H	PCM connector A (50P) No. 11 - Refer to: PCM Connector for Inputs and Outputs (9-Speed A/T) (2016 2017 2018), or PCM Connector for Inputs and Outputs (9-Speed A/T) (2019 2020 2021), or PCM Connector for Inputs and Outputs (6-Speed A/T)	Keyless access/TPMS control unit connector C (20P) No. 2 - Refer to: Keyless Access/TPMS Control Unit Connector for Inputs and Outputs (2016 2017 2018), or Keyless Access/TPMS Control Unit Connector for Inputs and Outputs (2019 2020 2021)
   	F-CAN A_L	PCM connector A (50P) No. 10 - Refer to: PCM Connector for Inputs and Outputs (9-Speed A/T) (2019 2020 2021), or PCM Connector for Inputs and Outputs (6-Speed A/T), or PCM Connector for Inputs and Outputs (9-Speed A/T) (2016 2017 2018)	Keyless access/TPMS control unit connector C (20P) No. 12 - Refer to: Keyless Access/TPMS Control Unit Connector for Inputs and Outputs (2016 2017 2018), or Keyless Access/TPMS Control Unit Connector for Inputs and Outputs (2019 2020 2021)

   Courtesy of HONDA, U.S.A., INC.

   Is there continuity?

   YES 

   The F-CAN A_L and F-CAN A_H wires are OK at this time, replace the transmitting control unit. (Refer to the DTC code shown on the display, and then replace the control unit based on the instructions in the table below.)

   DTC Description	TRANSMITTING CONTROL UNIT
   U0101F-CAN Malfunction (Powertrain Control Module (PCM)-Transmission Control Module (TCM))	TCM
   U0103F-CAN Malfunction (Powertrain Control Module (PCM)-SBW Shifter)	SBW shifter control module
   U0122 F-CAN Malfunction (Powertrain Control Module (PCM)-VSA Modulator-Control Unit)	VSA Modulator-Control Unit
   U0126F-CAN Malfunction (Powertrain Control Module (PCM) -Steering Angle Sensor)	Steering angle sensor
   U0131F-CAN Malfunction (Powertrain Control Module (PCM)-EPS Control Unit)	EPS Control Unit
   U0151 F-CAN Malfunction (Powertrain Control Module (PCM)-SRS Unit)	SRS unit - Refer to: SRS Unit Removal and Installation (2017 2018 2019 2020 2021), or SRS Unit Removal and Installation (2016)
   U0155 F-CAN Malfunction (Powertrain Control Module (PCM)-Gauge Control Module)	Gauge control module
   U1101 F-CAN Malfunction (Powertrain Control Module (PCM)-Active Control Engine Mount (ACM))	Engine mount control unit
   U129E F-CAN Malfunction (Powertrain Control Module (PCM)-Power Control Unit (PCU))	Keyless access/TPMS control unit

   NO 

   Repair an open in the F-CAN A_L and/or F-CAN A_H wires between the receiving control unit and the transmitting control unit.