OBD-II code · Chassis
C053A ABS Valves Missing Calibration
ABS valves not calibrated — required after HCU replacement.
Is it safe to drive with C053A?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyCalibration not performed
Symptoms
- ABS warning light on
- ESC/stability control deactivated
- Possible reduced brake assist
- Speedometer may behave erratically
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 0.3–1.5 h
- Emissions test
- Usually unaffected
- Parts involved
- ABS Valves
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.