OBD Guide
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C1071

ABS/ESP Control Module Internal Defect

C1071 is an OBD-II diagnostic trouble code meaning: ABS/ESP Control Module Internal Defect. Common causes: internal defect in abs/esp module, wiring harness damage. Estimated repair cost: $111–556.

Severity
🔴 High
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$111–556 (est.)

Symptoms

  • ABS/ESP indicator is on
  • Disabling the ABS/ESP system
  • Unstable brake operation
  • Loss of directional stability

Causes

  • Internal defect in ABS/ESP module
  • Wiring harness damage
  • Module power problems
  • Short circuit in the circuit
  • Software glitch

How to Fix

  1. Diagnose the ABS/ESP module for errors
  2. Check the integrity of the wiring harness and connectors
  3. Check the module supply voltage
  4. Reflash the module (if possible)
  5. Replace the ABS/ESP module if necessary

Related codes

C1070C1072U0121U0122

FAQ

What does the C1071 code mean?

C1071 is an OBD-II diagnostic trouble code that indicates: ABS/ESP Control Module Internal Defect

What causes a C1071 error code?

The most common causes of C1071 include: Internal defect in ABS/ESP module; Wiring harness damage; Module power problems; Short circuit in the circuit.

How do I fix a C1071 diagnostic trouble code?

To fix C1071: Diagnose the ABS/ESP module for errors. Check the integrity of the wiring harness and connectors. Check the module supply voltage. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C1071?

Limited driving only, diagnose soon

How much does it cost to fix C1071?

The estimated repair cost for C1071 is $111–556. Actual cost depends on your vehicle, location, and labor rates.

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