C12B8
ABS High Pressure Accumulator Pressure Sensor Erratic
C12B8 is an OBD-II diagnostic trouble code meaning: ABS High Pressure Accumulator Pressure Sensor Erratic. Common causes: battery pressure sensor malfunction, damage to the sensor wiring harness. Estimated repair cost: $56–167.
Symptoms
- The ABS indicator on the dashboard is on
- Reduced efficiency of the ABS system
- Unstable behavior of the system during emergency braking
Causes
- Battery pressure sensor malfunction
- Damage to the sensor wiring harness
- Contact corrosion
- Low brake fluid level
- Air in the ABS hydraulic system
- ABS control unit malfunction
How to Fix
- Check the brake fluid level and add if necessary
- Check the hydraulic system for leaks
- Diagnose the pressure sensor and its circuit using a scanner
- Check the condition of the wiring harness and contacts
- Replace pressure sensor if necessary
- If necessary, replace the ABS control unit
Related codes
FAQ
What does the C12B8 code mean?
C12B8 is an OBD-II diagnostic trouble code that indicates: ABS High Pressure Accumulator Pressure Sensor Erratic
What causes a C12B8 error code?
The most common causes of C12B8 include: Battery pressure sensor malfunction; Damage to the sensor wiring harness; Contact corrosion; Low brake fluid level.
How do I fix a C12B8 diagnostic trouble code?
To fix C12B8: Check the brake fluid level and add if necessary. Check the hydraulic system for leaks. Diagnose the pressure sensor and its circuit using a scanner. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with C12B8?
Limited driving only, diagnose soon
How much does it cost to fix C12B8?
The estimated repair cost for C12B8 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat