Pinpoint Test F: B129C:98, B129D:98, B13F3:98, B13F4:98

WARNING: This page is about a different car, the 2021 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.

Refer to PARKING AID for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Parking Aid - System Operation and Component Description .

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
IPMA B129C:98	Left Front Side Sensor: Component Or System Over Temperature	A continuous and on-demand DTC that sets when the LHF side parking aid sensor detects an over temperature event.
IPMA B129D:98	Right Front Side Sensor: Component Or System Over Temperature	A continuous and on-demand DTC that sets when the RHF side parking aid sensor detects an over temperature event.
IPMA B13F3:98	Left Rear Side Sensor: Component Or System Over Temperature	A continuous and on-demand DTC that sets when the LHR side parking aid sensor detects an over temperature event.
IPMA B13F4:98	Right Rear Side Sensor: Component Or System Over Temperature	A continuous and on-demand DTC that sets when the RHR side parking aid sensor detects an over temperature event.

Possible Sources

Aftermarket parts
Damage to the front bumper or sensor
Front parking aid sensor
IPMA

F1 CHECK THE DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE IPMA (IMAGE PROCESSING MODULE A) SELF-TEST
- Ignition ON.
- Using a diagnostic scan tool, perform the IPMA self-test.
- Check the IPMA Diagnostic Trouble Codes (DTCs) from the self-test.
Are parking aid Diagnostic Trouble Codes (DTCs) other than B129C:98, B129D:98, B13F3:98, or B13F4:98 recorded?

Yes For all other Diagnostic Trouble Codes (DTCs), REFER to the appropriate DTC chart.

No GO to F2

F2 CHECK THE PARKING AID SENSOR FOR PROPER VENTILATION

NOTE: The operating temperature range for the active park assist sensors is -40°C (-40°F) to 85°C (176°F).
- Clean the front bumper and sensors with high-pressure water.
- Make sure the suspect parking aid sensor(s) is flush-mounted in the bezel.
- Check for damage, debris or any aftermarket air dams that may restrict sensor ventilation.
- Check for aftermarket exhaust or other aftermarket parts.
Is there any damage or aftermarket parts restricting the ventilation to the sensor(s)?

Yes REPAIR or REMOVE the aftermarket parts as needed.

No GO to F3

F3 CHECK THE PARKING AID SENSORS
- Ignition OFF.
- Install a known good sensor for the suspect parking aid sensor. For a front sensor, REFER to: Front Active Park Assist Sensors . For a rear sensor, REFER to: Rear Active Park Assist Sensors .
- Ignition ON.
- Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs) and repeat the IPMA self-test.
Is the concern still present?

Yes GO to F4

No The cause of the concern was an inoperative parking aid sensor. The system is now operating correctly.

F4 CHECK FOR CORRECT IPMA (IMAGE PROCESSING MODULE A) OPERATION

Ignition OFF.

Disconnect and inspect all IPMAe connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the IPMA connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes	CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new IPMA. REFER to: Image Processing Module A (IPMA) .

No	The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.