OBD code B1538 indicates a fault with the Memory 2 Switch circuit in the Body Control Module (BCM).
Symptoms include the Engine Light being ON.
The issue is typically caused by a faulty Memory 2 Switch or related wiring issues.
While not a critical problem, it should be addressed promptly.
To fix it, inspect the wiring harness and connectors for any damage or poor connections.
| Repair Importance Level | 10.0 (Out of 10) |
| Estimated Repair Time | Approximately 1.0 hour |
| Repair Difficulty Level | 10.0 (Out of 10) |
Symptoms of the b1538 OBD Code
The vehicle displays an airbag warning light on the dashboard with fault code B1538 stored.
- Symptoms: Service Engine Soon Warning Light ON.
- Intermittent power door lock operation.
- Inoperative power door locks.
Causes of the b1538 OBD Code
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B1538 code typically indicates a fault in the passenger airbag disable indicator circuit.
- B1538 can be caused by a faulty Memory 2 Switch.
- A Memory 2 Switch harness that is open or shorted.
- A Memory 2 Switch circuit with poor electrical connection.
- A faulty Body Control Module (BCM).
Fixing Error Code b1538 Step By Step
To address fault code B1538, inspect and repair the driver’s side airbag circuit as needed.
- To fix OBDII code B1538, start by reviewing the possible causes mentioned above.
- Visually examine the wiring harness and connectors related to the code.
- Check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.
- If the wiring and connectors appear to be in good condition, proceed to test the component or system associated with the code for proper operation.
- Depending on the specific component or system involved, you may need to replace a faulty part, reset a module, or perform a software update to resolve the issue.
Cost Of Fixing b1538 Fault Code
Diagnosing and repairing fault code B1538 may involve inspecting and testing the vehicle’s seat belt pretensioner system.
The cost to diagnose and fix OBD code B1538 depends on the estimated 1. 0hour repair time.
Labor rates usually range from $75 to $150 per hour, so the total cost could be between $75 and $150. Factors like shop rates and complexity can influence the final cost.
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Details of the b1538 OBD Code
B1538 indicates a fault in the passenger airbag status indicator circuit.
OBD code B1538 means Ambient Air Temperature Sensor Circuit Short to Ground.
This code is triggered by the Body Control Module (BCM) when it detects a short to ground in the circuit of the ambient air temperature sensor.
The ambient air temperature sensor is part of the HVAC (Heating, Ventilation, and Air Conditioning) system and provides the BCM with information about the outside air temperature.
When a short to ground is detected in this circuit, the BCM sets code B1538 to indicate the issue with the ambient air temperature sensor circuit.
Mechanic’s Tech Notes
Code B1538 indicates a faulty passenger airbag status indicator circuit.
OBDII code B1538 indicates a problem with the automatic transmission control module (TCM) power input signal.
To diagnose, use a multimeter to check TCM power and ground connections.
Verify TCM communication over the Controller Area Network (CAN) using a scan tool.
Visually inspect wiring harnesses and connectors for damage, and check for broken, bent, or corroded pins.
Reflashing the TCM may be necessary to resolve the issue.
FAQ
OBD code B1538 indicates an issue with the Memory 2 Switch circuit. Check for faulty switch, wiring, or BCM. Inspect and repair wiring and connectors as needed.
Common symptoms of OBD code B1538 include Engine Light ON. Causes may be a faulty Memory 2 Switch or harness issues. Fix: Inspect wiring and connectors for damage.
Diagnose OBD code B1538 by checking Memory 2 Switch and BCM. Inspect wiring for damage or poor connections. Repair as needed.
Wrap Up
If your vehicle is displaying OBD code b1538, you may experience issues with the power door lock circuit.
This could be caused by a faulty door lock actuator, damaged wiring, or a malfunctioning door lock switch.
To address OBD code b1538, start by inspecting the wiring harness for any visible damage or corrosion.
Test the door lock actuator and switch for proper operation.
Replace any faulty components and ensure all connectors are securely attached.
