The OBD code B393B for GMC indicates an issue with the Air Conditioning Compressor circuit.
Symptoms include the Engine Light being ON.
This code is commonly caused by a faulty Air Conditioning Compressor or poor electrical connections in the circuit.
It is not a severe issue.
To fix it, inspect the wiring harness and connectors for any damage or corrosion, and check the connector pins for any issues.
| 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 Gmc b393b OBD Code
The vehicle displays a fault code Gmc b393b indicating an issue with the system.
- Symptoms: Service Engine Soon Warning Light ON.
- Possible rough idle.
- Engine may stall at low speeds.
- Engine performance may feel sluggish.
Causes of the Gmc b393b OBD Code
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Fault code Gmc b393b may be triggered by issues with the steering angle sensor.
- B393B can be caused by a faulty Air Conditioning Compressor.
- An open or shorted Air Conditioning Compressor harness.
- Poor electrical connection in the Air Conditioning Compressor circuit.
- A faulty Heating, Ventilation, and Air Conditioning (HVAC) Control Module.
Fixing Gmc Error Code b393b Step By Step
To address GMC fault code B393B, inspect and repair the rear cross traffic alert module.
- To fix GMC OBDII code B393B, start by reviewing the possible causes mentioned above.
- Visually examine the wiring harness and connectors related to the brake pedal position sensor circuit.
- Check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.
- If any issues are found during the inspection, repair or replace the damaged wiring or connectors as necessary.
- Clear the fault code from the vehicle’s computer using a scan tool.
- Test drive the vehicle to ensure the code does not return, indicating a successful repair.
Cost Of Fixing Gmc b393b Fault Code
The repair for GMC fault code B393B may involve replacing the rear camera module.
The cost to diagnose and fix the GMC OBD code B393B will depend on the estimated 1. 0hour repair time.
Labor rates usually range from $75 to $150 per hour, so the cost can be estimated between $75 and $150, excluding parts.
Factors like shop rates and complexity can affect the final cost.
Details of the Gmc b393b OBD Code
GMC fault code B393B relates to the HVAC system temperature sensor circuit malfunction.
GMC OBD code B393B means Right Rear Turn Signal Circuit Short to Ground.
This code is triggered by the Body Control Module (BCM) when it detects a short to ground in the right rear turn signal circuit.
The BCM monitors the voltage levels in the turn signal circuits to detect faults like shorts or opens.
When a short to ground is detected in the right rear turn signal circuit, the BCM sets this B393B fault code to indicate the issue.
Mechanic’s Tech Notes
Detailed information on GMC fault code B393B for diagnostic and repair guidance.
OBDII code B393B for GMC indicates an issue with the Transmission Control Module (TCM).
To diagnose, check TCM power and ground using a multimeter.
Use a scan tool to confirm TCM communication over the CAN network.
Visually inspect wiring harnesses and connectors for damage, and check connector pins for any issues like corrosion or bending.
Reflashing the TCM may be necessary.
If the problem persists, consider consulting a professional for further assistance.
FAQ
OBD code B393B in a GMC indicates an issue with the Air Conditioning Compressor circuit. Check for faults in the compressor, harness, or HVAC Control Module.
Diagnose OBD code B393B in your GMC by checking for a faulty AC compressor, harness issues, or HVAC control module problems. Inspect wiring and connectors for damage.
To fix OBD code B393B in a GMC vehicle, check the AC compressor, harness, and HVAC module for faults. Inspect wiring, connectors, and components for damage or corrosion.
Wrap Up
If your GMC is displaying OBD code B393B, you may experience issues with the fuel pump control module.
This could be caused by a faulty fuel pump, wiring problems, or a malfunctioning fuel pump control module itself.
To address GMC OBD code B393B, start by checking the wiring harness and connectors related to the fuel pump control module.
Test the fuel pump for proper operation and consider replacing the fuel pump control module if necessary.
Ensure all connections are secure and free of corrosion to prevent future issues.
