OBD code C1931 indicates a fault with the Air Suspension Front Compressor Relay circuit.
Symptoms include the ABS and Engine warning lights being illuminated.
This issue is commonly caused by a faulty relay or wiring harness issues.
It is important to visually inspect the relay, 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) |
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Symptoms of the c1931 OBD Code
The vehicle displays an error code C1931 related to the suspension system.
- Symptoms: AntiLock Brake System (ABS) Warning Light ON.
- Engine Light ON (or Service Engine Soon Warning Light).
- Possible loss of ABS functionality.
- Strange noises coming from the ABS system.
- Difficulty braking in certain conditions.
Causes of the c1931 OBD Code
Possible reasons for fault code C1931 include issues with the air suspension system components.
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- C1931 can be caused by a faulty Air Suspension Front Compressor Relay.
- An open or shorted Air Suspension Front Compressor Relay harness.
- A poor electrical connection in the Air Suspension Front Compressor Relay circuit.
- A faulty Air Suspension Module.
Fixing Error Code c1931 Step By Step
To resolve fault code C1931, inspect the steering angle sensor for proper calibration and functionality.
- To fix OBDII code C1931, first, review the ‘Possible Causes’ mentioned above and visually examine the corresponding wiring harness and connectors.
- Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.
- Next, check the steering angle sensor for proper operation and calibration.
- If the sensor is faulty, replace it with a new one.
- Finally, clear the fault codes using a scan tool and test drive the vehicle to verify that the issue has been resolved.
Cost Of Fixing c1931 Fault Code
Diagnosing and repairing fault code C1931 may involve inspecting and testing the vehicle’s steering angle sensor system.
The cost to diagnose and fix OBD code C1931 depends on the estimated 1. 0hour repair time.
Labor rates range from $75 to $150 per hour, affecting the total cost.
Other factors like shop rates and complexity of the repair can also influence the final price.
Details of the c1931 OBD Code
Code C1931 relates to the ABS hydraulic pump motor circuit being open or shorted.
OBD code C1931 means that the ride level control module has detected a malfunction in the air suspension pressure sensor circuit.
This code is triggered by the ride level control module when it detects a discrepancy in the air suspension pressure sensor signal.
The air suspension pressure sensor is responsible for monitoring the pressure in the air suspension system to ensure proper vehicle ride height and comfort.
When the sensor circuit malfunctions, it can lead to issues with the vehicle’s suspension system.
Mechanic’s Tech Notes
Code C1931 relates to the ABS hydraulic valve relay circuit being open or shorted.
OBDII code C1931 relates to a transmission control module (TCM) malfunction.
To diagnose, use a multimeter to check TCM power and ground connections.
Utilize a scan tool to confirm TCM communication over the Controller Area Network (CAN) network.
Visually inspect wiring harnesses and connectors for damage, focusing on pin condition for signs of corrosion, bending, or breakage.
If no visible issues are found, consider TCM reprogramming or replacement.
FAQ
OBD code C1931 indicates an issue with the Air Suspension Front Compressor Relay circuit. Check relay, harness, and connections for faults.
Common symptoms of OBD code C1931 include ABS warning light and engine light on. Causes may be faulty air suspension front compressor relay or related wiring issues. Fix: Inspect and repair as needed.
Diagnose OBD code C1931 by checking Air Suspension Front Compressor Relay and harness for faults. Inspect wiring for damage or poor connections.
Wrap Up
If your ABS warning light is illuminated and you find OBDII code c1931, it may indicate a fault in the ABS hydraulic pump motor circuit.
This could be caused by a malfunctioning ABS hydraulic pump motor, damaged wiring, or poor electrical connections.
To address OBDII code c1931, start by inspecting the wiring harness and connectors related to the ABS hydraulic pump motor.
Look for any signs of damage, corrosion, or loose connections.
Test the ABS hydraulic pump motor for proper operation and replace it if necessary.
