The OBD code B108A for Ford indicates an issue with the Start Button Switch circuit.
Symptoms include the Engine Light being ON.
The cause could be a faulty Start Button Switch or related wiring issues.
This problem is not severe but should be addressed promptly.
A possible fix is to inspect the wiring harness and connectors for any damage or poor connections, focusing on the Start Button Switch circuit.
| Repair Importance Level | 10.0 (Out of 10) |
| Estimated Repair Time | Approximately 1.0 hour |
| Repair Difficulty Level | 10.0 (Out of 10) |
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Symptoms of the Ford b108a OBD Code
The Ford B108A fault code indicates an issue with the passenger airbag module circuit.
- Symptoms: Service Engine Soon Warning Light may illuminate.
- HVAC system may not function properly.
- Parking aid system may not work correctly.
- Audio system may have issues.
- Seat memory may not operate as expected.
Causes of the Ford b108a OBD Code
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Possible triggers for Ford B108A include faulty passenger occupant detection sensor or wiring issues.
- B108A can be caused by a faulty Start Button Switch.
- A Start Button Switch harness that is open or shorted.
- A Start Button Switch circuit with poor electrical connection.
- A faulty Body Control Module (BCM).
Fixing Ford Error Code b108a Step By Step
To address fault code B108A on a Ford, inspect and potentially replace the passenger occupant classification system module.
- To fix the Ford OBDII code B108A, start by reviewing the possible causes and visually inspecting the wiring harness and connectors.
- Check for any damaged components and examine the connector pins for signs of being broken, bent, pushed out, or corroded.
- If no issues are found with the wiring, consider resetting the related module or performing a software update.
- If the problem persists, it may be necessary to replace the faulty component or module causing the B108A fault code.
Cost Of Fixing Ford b108a Fault Code
The repair for Ford fault code B108A may involve replacing the passenger occupant classification system module.
The cost to diagnose and fix Ford OBD code B108A typically ranges from $75 to $150, based on a 1. 0hour repair time.
Factors like shop rates and complexity can affect the final cost.
Details of the Ford b108a OBD Code
Ford code B108A relates to a passenger airbag indicator circuit fault.
Ford OBD code B108A means Passenger Airbag Deactivation Indicator Circuit Short to Ground.
This code is triggered by the Restraints Control Module (RCM) when it detects a short to ground in the circuit for the passenger airbag deactivation indicator.
The system involved is the passenger airbag deactivation indicator circuit, which is responsible for monitoring the status of the passenger airbag deactivation system.
Mechanic’s Tech Notes
For Ford code B108A, check for a fault in the passenger occupant classification system.
OBDII code B108A in a Ford typically indicates a problem with the Transmission Control Module (TCM) power supply circuit.
To diagnose this, use a voltmeter to check TCM power and ground connections for proper voltage levels.
Additionally, scan tools can be used to communicate with the TCM over the Controller Area Network (CAN) to verify its responsiveness.
If the wiring harness or connectors appear visually damaged, inspect them closely for issues like broken, bent, or corroded pins.
Reflashing the TCM may be necessary to resolve the fault.
FAQ
OBD code B108A in a Ford indicates an issue with the Start Button Switch circuit. Check for faulty switch, wiring, or BCM. Inspect and repair as needed.
Diagnose OBD code B108A in Ford for Engine Light ON. Check Start Button Switch, harness, BCM. Inspect wiring, connectors for damage, corrosion.
Common symptoms of OBD code B108A in a Ford vehicle include Engine Light ON, caused by issues with the Start Button Switch or Body Control Module. Fix: Inspect wiring and connectors.
Wrap Up
If your Ford is displaying OBD code b108a and you’re experiencing issues with the airbag system, it could be caused by a faulty passenger occupant detection sensor or a related wiring problem.
This code typically indicates a problem with the passenger seat weight sensor system, which may lead to improper airbag deployment in case of an accident.
To address Ford OBD code b108a, start by inspecting the wiring harness and connectors associated with the passenger seat weight sensor.
Check for any damaged wires, loose connections, or corrosion that could be affecting the sensor’s functionality.
If no visible issues are
