ABS Pump Motor Supply Voltage Circuit A/B Correlation
Supply voltages A and B for ABS pump motor disagree.
Affected components
- Abs pump supply a
- Abs pump supply b
Common causes
- High likelihood: One supply rail with high resistance
Possible symptoms
- ABS warning light on
- ESC/stability control deactivated
- Possible reduced brake assist
- Speedometer may behave erratically
Diagnostic notes
- The malfunction indicator lamp may illuminate
- Reduced-power or limp mode may occur
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.