Pinpoint Test P: B1B36:98, B1B38:98, B1B40:98, Or B1B42:98

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.

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
IPMA B1B36:98	Right Front Outer Sensor: Component Or System Over Temperature	A continuous and on-demand DTC that sets when the RHF outer parking aid sensor detects an over temperature event.
IPMA B1B38:98	Right Front Inner Sensor: Component Or System Over Temperature	A continuous and on-demand DTC that sets when the RHF inner parking aid sensor detects an over temperature event.
IPMA B1B40:98	Left Front Outer Sensor: Component Or System Over Temperature	A continuous and on-demand DTC that sets when the LHF outer parking aid sensor detects an over temperature event.
IPMA B1B42:98	Left Front Inner Sensor: Component Or System Over Temperature	A continuous and on-demand DTC that sets when the LHF inner parking aid sensor detects an over temperature event.

Possible Sources

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

P1 CHECK THE DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE IPMA (IMAGE PROCESSING MODULE A) SELF-TEST

Ignition ON.

Using a diagnostic scan tool, carry out the IPMA self-test.

Check the parking aid Diagnostic Trouble Codes (DTCs) from the self-test.

Are parking aid Diagnostic Trouble Codes (DTCs) recorded?

Yes	For Diagnostic Trouble Codes (DTCs) B1B36:98, B1B38:98, B1B40:98 or B1B42:98, GO to P2 For all other Diagnostic Trouble Codes (DTCs), REFER to the appropriate DTC Chart.

No	The system is operating correctly at this time.

P2 CHECK THE PARKING AID SENSOR FOR PROPER VENTILATION

NOTE: The operating temperature range for the parking aid 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.
Is there any damage or aftermarket parts restricting the ventilation to the sensor(s)?

Yes REPAIR or REMOVE the parts as needed.

No GO to P3

P3 CHECK THE PARKING AID SENSORS
- Ignition OFF.
- Install a known good sensor for the suspect parking aid sensor. REFER to: Front Parking Aid Sensor .
- 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 P4

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

P4 CHECK FOR CORRECT IPMA (IMAGE PROCESSING MODULE A) OPERATION

Ignition OFF.

Disconnect and inspect all IPMA 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.