OBD Guide
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C1039

Yaw Rate/G Sensor Assembly Internal Failure

C1039 is an OBD-II diagnostic trouble code meaning: Yaw Rate/G Sensor Assembly Internal Failure. Common causes: physical damage to the sensor (shock, vibration), short circuit in the sensor circuit. Estimated repair cost: $167–389.

Severity
🔴 High
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$167–389 (est.)

Symptoms

  • The ESP/stability control lamp is on
  • Disabling the stabilization system
  • Incorrect operation of airbags
  • Some ADAS features are not available

Causes

  • Physical damage to the sensor (shock, vibration)
  • Short circuit in the sensor circuit
  • Wiring Harness Problems
  • Internal defect in sensor electronics
  • Moisture entering the sensor housing

How to Fix

  1. Visual inspection of the sensor and its mounting
  2. Checking connections and integrity of the wiring harness
  3. Diagnostics of sensor parameters via scanner
  4. Replacing the sensor unit if necessary
  5. Calibrating a new sensor

Related codes

C1027C1038B00A0U0121

FAQ

What does the C1039 code mean?

C1039 is an OBD-II diagnostic trouble code that indicates: Yaw Rate/G Sensor Assembly Internal Failure

What causes a C1039 error code?

The most common causes of C1039 include: Physical damage to the sensor (shock, vibration); Short circuit in the sensor circuit; Wiring Harness Problems; Internal defect in sensor electronics.

How do I fix a C1039 diagnostic trouble code?

To fix C1039: Visual inspection of the sensor and its mounting. Checking connections and integrity of the wiring harness. Diagnostics of sensor parameters via scanner. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C1039?

Do not drive — repair immediately

How much does it cost to fix C1039?

The estimated repair cost for C1039 is $167–389. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat