OBD Guide
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C12B7

ABS High Pressure Accumulator Pressure Sensor Circuit Short to Battery

C12B7 is an OBD-II diagnostic trouble code meaning: ABS High Pressure Accumulator Pressure Sensor Circuit Short to Battery. Common causes: damage to the sensor wiring harness, battery pressure sensor malfunction. Estimated repair cost: $56–167.

Severity
🔴 High
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • The ABS indicator on the dashboard is on
  • ABS system does not work
  • Possible problems with braking

Causes

  • Damage to the sensor wiring harness
  • Battery pressure sensor malfunction
  • Problems in the ABS control unit
  • Short circuit in the circuit

How to Fix

  1. Check the sensor wiring harness for damage.
  2. Check the resistance of the pressure sensor
  3. Check the voltage in the sensor circuit
  4. Replace pressure sensor if necessary
  5. Check ABS control unit

Related codes

C12B6C12B8C12B9

FAQ

What does the C12B7 code mean?

C12B7 is an OBD-II diagnostic trouble code that indicates: ABS High Pressure Accumulator Pressure Sensor Circuit Short to Battery

What causes a C12B7 error code?

The most common causes of C12B7 include: Damage to the sensor wiring harness; Battery pressure sensor malfunction; Problems in the ABS control unit; Short circuit in the circuit.

How do I fix a C12B7 diagnostic trouble code?

To fix C12B7: Check the sensor wiring harness for damage.. Check the resistance of the pressure sensor. Check the voltage in the sensor circuit. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C12B7?

Limited driving only, diagnose soon

How much does it cost to fix C12B7?

The estimated repair cost for C12B7 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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