The OBD code B1325 for Chevrolet indicates an issue with the Control Module Power.
This affects the control module’s ability to function properly.
Symptoms include the Engine Light being ON.
Causes can be a faulty Control Module Power, open/shorted harness, or poor electrical connection.
It is a moderate issue.
To fix, inspect wiring harness, connectors, and components for damage or corrosion.
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 Chevrolet b1325 OBD Code
The Chevrolet B1325 fault code typically triggers when there is an issue with the HVAC system.
- Symptoms: Service Engine Soon Warning Light may illuminate.
- HVAC system may not function properly.
- Power windows may not operate correctly.
- Radio may not work as expected.
- Horn may not sound when pressed.
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Causes of the Chevrolet b1325 OBD Code
Possible triggers for Chevrolet B1325 include faulty HVAC control module or wiring issues.
- B1325 can be caused by a faulty Control Module Power.
- A Control Module Power harness that is open or shorted.
- A Control Module Power circuit with poor electrical connection.
Fixing Chevrolet Error Code b1325 Step By Step
Resolve the Chevrolet B1325 code by inspecting and repairing the HVAC actuator circuit.
- To fix Chevrolet OBDII code B1325, start by reviewing the possible causes mentioned above.
- Visually examine the wiring harness and connectors related to the body control module (BCM).
- Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.
- If no issues are found with the wiring and connectors, consider resetting the BCM by disconnecting the battery for a few minutes.
- After reconnecting the battery, clear the fault code using a scan tool and monitor for its return.
- If the code persists, it may be necessary to replace the BCM with a new unit and program it to the vehicle.
Cost Of Fixing Chevrolet b1325 Fault Code
The repair for Chevrolet B1325 may involve diagnosing and fixing issues with the HVAC system.
The cost to diagnose and fix a Chevrolet OBD code B1325 typically ranges from $75 to $150, based on an estimated repair time of 1. 0 hour.
Factors like shop rates and complexity of the issue can influence the final cost.
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Details of the Chevrolet b1325 OBD Code
Chevrolet B1325 code indicates a fault in the HVAC system temperature sensor circuit.
Chevrolet OBD code B1325 means that there is a fault with the HVAC system mode door position sensor circuit.
This code is triggered by the Body Control Module (BCM) when it detects an issue with the position sensor circuit for the HVAC system mode door.
The HVAC system mode door controls the direction of airflow within the vehicle’s heating, ventilation, and air conditioning system.
When the BCM detects a fault with the sensor circuit, it sets code B1325 to indicate the problem with the HVAC system.
Mechanic’s Tech Notes
For Chevrolet B1325, check for communication issues with the HVAC control module.
To diagnose and fix OBDII code B1325 in a Chevrolet, start by checking the Transmission Control Module (TCM) power and ground using a multimeter.
Verify TCM communication over the Controller Area Network (CAN) using a scan tool.
If the TCM does not respond, reprogramming or reflashing may be necessary.
Visually inspect the wiring harness and connectors for any damage, and check connector pins for signs of corrosion, bending, or breakage.
This thorough inspection can help identify and resolve the issue causing the B1325 trouble code.
FAQ
OBD code B1325 in a Chevrolet indicates an issue with the Control Module Power. Check for faulty module, wiring harness, or poor electrical connection.
To diagnose OBD code B1325 in a Chevrolet, check for Engine Light ON. Possible causes include faulty Control Module Power, open/shorted harness, or poor electrical connection. Inspect wiring and connectors.
Common symptoms of OBD code B1325 in a Chevrolet include Engine Light ON. To address, check for faulty Control Module Power, harness issues, or poor electrical connections.

Wrap Up
If your Chevrolet is displaying OBD code B1325 and you’re experiencing issues with the HVAC system, it could be caused by a faulty HVAC control module or a communication error within the HVAC system.
This code typically indicates a problem with the HVAC control module communication circuit.
To address Chevrolet OBD code B1325, start by checking the wiring harness and connectors related to the HVAC control module.
Look for any signs of damage, corrosion, or loose connections.
If everything looks good, consider testing the HVAC control module itself for proper operation.