OBD2 code C0420: Traction control - ESP/ESC
Traction/stability control malfunction.
Detected Root Component
Chassis Component
Observed Symptoms
- ESP/ESC light on
- ABS light on
- Excessive body roll when cornering
Possible Causes
- Defective sensor
- Faulty ABS module
- Faulty steering angle sensor
- Damaged wiring
Tools Required
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Parts likely to be the cause (Capteur ABS)
Capteur ABS
Photo d'illustration : Capteur ABS
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Frequently asked questions about code C0420
What does code C0420 mean? ▾
OBD2 code C0420: Traction control - ESP/ESC. Traction/stability control malfunction.
What are the symptoms of code C0420? ▾
Code C0420 may cause: ESP/ESC light on, ABS light on, Excessive body roll when cornering. The intensity of these symptoms varies depending on the vehicle and driving conditions.
What causes code C0420? ▾
The most common causes of code C0420 are: Defective sensor, Faulty ABS module, Faulty steering angle sensor, Damaged wiring. A proper OBD2 diagnostic will pinpoint the exact cause.
Is it serious to drive with code C0420? ▾
Yes, code C0420 is critical (Critical). Avoid driving and consult a professional promptly to prevent major damage.
How do I fix code C0420? ▾
Start by reading the code with an OBD2 scanner, then follow the interactive decision tree on this page. Priority causes to check: Defective sensor, Faulty ABS module, Faulty steering angle sensor, Damaged wiring. Difficulty: Medium · Estimated time: 30-60min.