OBD2 code C0023: ABS Pump Motor Circuit High
Voltage on the pump motor control line is above the expected range, typically caused by a short to battery voltage or a stuck relay.
Detected Root Component
Chassis Component
Observed Symptoms
- ABS warning light on
- ESC/stability control deactivated
- Possible reduced brake assist
- Speedometer may behave erratically
Possible Causes
- Wiring shorted to battery voltage
- Relay contacts welded closed
- Connector pins corroded - high contact resistance
Tools Required
Interactive Diagnostic
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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 C0023
What does code C0023 mean? ▾
OBD2 code C0023: ABS Pump Motor Circuit High. Voltage on the pump motor control line is above the expected range, typically caused by a short to battery voltage or a stuck relay.
What are the symptoms of code C0023? ▾
Code C0023 may cause: ABS warning light on, ESC/stability control deactivated, Possible reduced brake assist, Speedometer may behave erratically. The intensity of these symptoms varies depending on the vehicle and driving conditions.
What causes code C0023? ▾
The most common causes of code C0023 are: Wiring shorted to battery voltage, Relay contacts welded closed, Connector pins corroded - high contact resistance. A proper OBD2 diagnostic will pinpoint the exact cause.
Is it serious to drive with code C0023? ▾
Yes, code C0023 is critical (Critical). Avoid driving and consult a professional promptly to prevent major damage.
How do I fix code C0023? ▾
Start by reading the code with an OBD2 scanner, then follow the interactive decision tree on this page. Priority causes to check: Wiring shorted to battery voltage, Relay contacts welded closed, Connector pins corroded - high contact resistance. Difficulty: Medium · Estimated time: 30-60min.