[SOLVED] Dodge C0021 Code: Quick Fix For Brake Booster Performance

The OBD code C0021 for Dodge indicates an issue with the Vacuum Pressure Sensor circuit in the AntiLock Brake System (ABS).

Symptoms include the ABS Warning Light and Engine Light being illuminated.

This can be caused by a faulty Brake Booster, Vacuum Pressure Sensor, or related wiring issues.

It is a moderate issue that should be addressed promptly.

To fix it, inspect and repair any damaged components or wiring connections related to the Vacuum Pressure Sensor 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 Dodge c0021 OBD Code

The Dodge C0021 fault code typically triggers when there is an issue with the right front wheel speed sensor.

Symptoms: AntiLock Brake System (ABS) Warning Light ON.
Engine Light ON (or Service Engine Soon Warning Light).
Possible symptoms include issues with the ABS system functionality.
Braking performance may be affected.
The vehicle may exhibit unusual noises during braking.

Causes of the Dodge c0021 OBD Code

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Possible triggers for Dodge fault code C0021 include faulty wheel speed sensor or damaged wiring.

C0021 can be caused by a faulty Brake Booster.
A faulty Vacuum Pressure Sensor.
An open or shorted Vacuum Pressure Sensor harness.
A poor electrical connection in the Vacuum Pressure Sensor circuit.

Fixing Dodge Error Code c0021 Step By Step

Repairing the ABS module or replacing the wheel speed sensor can resolve Dodge code C0021.

To fix the Dodge OBDII code C0021, start by reviewing the possible causes mentioned above.
Visually examine the wiring harness and connectors related to the ABS system.
Check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.
Perform a thorough inspection of the wheel speed sensors and tone rings for any damage or debris.
Test the wheel speed sensor signals using a scan tool to identify any faulty sensors.
Replace any faulty wheel speed sensors or repair damaged wiring as necessary.
Clear the fault codes and test drive the vehicle to ensure the issue has been resolved.

Cost Of Fixing Dodge c0021 Fault Code

The repair for Dodge fault code C0021 typically involves inspecting and possibly replacing the ABS module.

The cost to diagnose and fix Dodge OBD code C0021 is typically based on an estimated repair time of 1. 0 hour, with labor rates ranging from $75 to $150 per hour.

The total cost will depend on shop rates, complexity of the issue, and any additional parts or services needed.

Details of the Dodge c0021 OBD Code

Dodge fault code C0021 relates to a right front wheel speed sensor circuit issue.

Dodge OBD code C0021 means that the right front wheel speed sensor circuit has a signal malfunction.

This code is triggered by the AntiLock Brake System (ABS) module when it detects an issue with the signal coming from the right front wheel speed sensor.

The ABS module uses this sensor to monitor the speed of the right front wheel to help prevent wheel lockup during braking.

If the signal from the sensor is erratic or missing, the C0021 trouble code is set.

Mechanic’s Tech Notes

For Dodge code C0021, check the right front wheel speed sensor circuit for issues.

To diagnose and fix OBDII code C0021 in a Dodge, start by checking the ABS module power and ground using a voltmeter.

Verify communication between the ABS module and other modules over the CAN network using a scan tool.

If communication issues are found, reprogramming or reflash may be necessary.

Visually inspect the wiring harness and connectors for any damage, and ensure connector pins are not broken, bent, pushed out, or corroded.

Address any issues found during the inspection to resolve the C0021 fault code.

FAQ

1. What does OBD code C0021 indicate in a Dodge vehicle?

OBD code C0021 in a Dodge indicates an issue with the Brake Booster or Vacuum Pressure Sensor circuit. Check wiring and connectors for damage.

2. What are the common symptoms associated with OBD code C0021 in a Dodge vehicle?

Common symptoms for OBD code C0021 in a Dodge: ABS Warning Light ON, Engine Light ON. Causes: Faulty Brake Booster, Vacuum Pressure Sensor issues. Fix: Inspect wiring and connectors for damage.

3. How can I diagnose and repair OBD code C0021 in my Dodge vehicle?

Diagnose OBD code C0021 in Dodge: Symptoms ABS & Engine Light ON. Causes Faulty Brake Booster, Vacuum Pressure Sensor issues. Fix Inspect wiring, connectors, components for damage.

Wrap Up

If your Dodge is showing OBD code c0021 and you’re experiencing issues with the ABS system, it could be caused by a faulty wheel speed sensor, damaged wiring harness, or poor connections at the sensor or module.

To address Dodge OBD code c0021, start by inspecting the wheel speed sensor and its wiring for any visible damage.

Test the sensor’s resistance and check for proper signal output.

Ensure connectors are clean and securely attached.

Replace the sensor if necessary and repair any damaged wiring.