OBD Guide
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P13C7

Knock Sensor 2 Electrical Signal Input B Short Circuit To Ground

P13C7 is an OBD-II diagnostic trouble code meaning: Knock Sensor 2 Electrical Signal Input B Short Circuit To Ground. Common causes: damage to knock sensor wiring, short circuit in wiring harness. 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
  • The engine is unstable
  • Check Engine light comes on
  • Possible misfires

Causes

  • Damage to knock sensor wiring
  • Short circuit in wiring harness
  • Knock sensor 2 malfunction
  • Problems with the sensor connector
  • Contact corrosion

How to Fix

  1. Check the integrity of the knock sensor 2 wiring
  2. Inspect the sensor connector for damage
  3. Check the resistance of the knock sensor
  4. Replace knock sensor if necessary
  5. Eliminate short circuit in the circuit

Related codes

P13C6P13C8P0325

FAQ

What does the P13C7 code mean?

P13C7 is an OBD-II diagnostic trouble code that indicates: Knock Sensor 2 Electrical Signal Input B Short Circuit To Ground

What causes a P13C7 error code?

The most common causes of P13C7 include: Damage to knock sensor wiring; Short circuit in wiring harness; Knock sensor 2 malfunction; Problems with the sensor connector.

How do I fix a P13C7 diagnostic trouble code?

To fix P13C7: Check the integrity of the knock sensor 2 wiring. Inspect the sensor connector for damage. Check the resistance of the knock sensor. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P13C7?

Yes, but get it checked soon

How much does it cost to fix P13C7?

The estimated repair cost for P13C7 is $17–56. Actual cost depends on your vehicle, location, and labor rates.

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