OBD Guide
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P13AE

Knock Sensor Electrical Signal Input A Short Circuit To Ground

P13AE is an OBD-II diagnostic trouble code meaning: Knock Sensor Electrical Signal Input A Short Circuit To Ground. Common causes: damage to knock sensor wiring, short circuit to ground in the sensor circuit. Estimated repair cost: $17–56.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$17–56 (est.)

Symptoms

  • Reduced engine power
  • Increased fuel consumption
  • Engine knock
  • Check Engine Light Is On
  • The engine is unstable

Causes

  • Damage to knock sensor wiring
  • Short circuit to ground in the sensor circuit
  • Knock sensor malfunction
  • Problems with the sensor connector
  • Engine control unit (ECU) malfunction

How to Fix

  1. Check the integrity of the knock sensor wiring
  2. Check the sensor connector for damage
  3. Measure the resistance of the knock sensor
  4. Check for short circuit to ground
  5. Replace knock sensor if necessary

Related codes

P0325P0326P0327

FAQ

What does the P13AE code mean?

P13AE is an OBD-II diagnostic trouble code that indicates: Knock Sensor Electrical Signal Input A Short Circuit To Ground

What causes a P13AE error code?

The most common causes of P13AE include: Damage to knock sensor wiring; Short circuit to ground in the sensor circuit; Knock sensor malfunction; Problems with the sensor connector.

How do I fix a P13AE diagnostic trouble code?

To fix P13AE: Check the integrity of the knock sensor wiring. Check the sensor connector for damage. Measure the resistance of the knock sensor. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P13AE?

Yes, but get it checked soon

How much does it cost to fix P13AE?

The estimated repair cost for P13AE is $17–56. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat