C1204 GMC Code - Right Front Wheel Speed Sensor Circuit Range Performance
Quick Answer
As the wheel is rotated, the speed sensor produces an AC voltage that increases with wheel speed. Common causes include Faulty Right Front Wheel Speed Sensor, Right Front Wheel Speed Sensor harness is open or shorted, Right Front Wheel Speed Sensor circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- C1204 GMC indicates Right Front Wheel Speed Sensor Circuit Range Performance.
- Common causes
- Common causes include Faulty Right Front Wheel Speed Sensor, Right Front Wheel Speed Sensor harness is open or shorted, Right Front Wheel Speed Sensor circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code C1204 GMC Description
What are the Possible Causes of the DTC C1204 GMC?
- Faulty Right Front Wheel Speed Sensor
- Right Front Wheel Speed Sensor harness is open or shorted
- Right Front Wheel Speed Sensor circuit poor electrical connection
- Faulty Electronic Brake Control Module (EBCM)
How to Fix the DTC C1204 GMC?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the C1204 GMC code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about C1204 GMC Code
What does the OBDII code C1204 mean on a GMC vehicle?
C1204 indicates an issue with the right front wheel speed sensor circuit, specifically relating to its range or performance. It means the signal from the sensor is outside the expected parameters.
What are common symptoms of the C1204 code?
Common symptoms include the ABS light or traction control light turning on, reduced ABS or traction control functionality, and in some cases, erratic braking behavior.
What causes the C1204 code to appear?
Causes include a faulty right front wheel speed sensor, damaged wiring or connectors in the sensor circuit, debris on the sensor or tone ring, or a malfunctioning ABS module.
Can I still drive my GMC with the C1204 code?
Yes, you can still drive the vehicle, but the ABS and traction control systems may not function properly, which can affect braking safety in slippery conditions.
How can I diagnose the C1204 code on my GMC?
Start by inspecting the right front wheel speed sensor and its wiring for damage or corrosion. Use a scan tool to monitor live sensor data and check for consistent signal output.
What tools are needed to fix the C1204 code?
You'll typically need a multimeter, an OBDII scan tool capable of reading ABS codes, and basic hand tools for removing the sensor if necessary.
How do I fix the C1204 code on my GMC?
Repairs might include replacing the right front wheel speed sensor, cleaning the sensor and tone ring, repairing damaged wiring, or replacing the ABS module if it’s defective.
Is the C1204 code covered by warranty?
It depends on your vehicle’s warranty. If your GMC is still under a powertrain or extended warranty, the issue may be covered. Check with your dealer for details.
What happens if I ignore the C1204 code?
Ignoring this code can lead to compromised braking performance, loss of ABS or traction control functionality, and potentially unsafe driving conditions in slippery environments.
Can a dirty wheel speed sensor cause the C1204 code?
Yes, dirt or debris on the sensor or tone ring can disrupt the signal and trigger the C1204 code. Cleaning the sensor may resolve the issue.
Discuss the causes and fixes for C1204 GMC OBDII Code
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