OBD Guide
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P1229

Sensor Power Supply Circuit Shorted

P1229 is an OBD-II diagnostic trouble code meaning: Sensor Power Supply Circuit Shorted. Common causes: wiring harness damage, short circuit in the sensor power supply circuit. Estimated repair cost: $6–56.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$6–56 (est.)

Symptoms

  • Check Engine light comes on
  • Reduced engine power
  • Increased fuel consumption
  • Unstable engine operation
  • The engine goes into emergency mode

Causes

  • Wiring harness damage
  • Short circuit in the sensor power supply circuit
  • Sensor malfunction
  • Problems with the engine control unit
  • Contact corrosion

How to Fix

  1. Check wiring harness for damage
  2. Check the sensor power circuit for a short circuit
  3. Replace faulty sensor
  4. Check and clean contacts
  5. Check the engine control unit

Related codes

P1228P1230P1231

Error P1229 by Vehicle Brand

FordJaguarLincolnMercuryVolkswagen

FAQ

What does the P1229 code mean?

P1229 is an OBD-II diagnostic trouble code that indicates: Sensor Power Supply Circuit Shorted

What causes a P1229 error code?

The most common causes of P1229 include: Wiring harness damage; Short circuit in the sensor power supply circuit; Sensor malfunction; Problems with the engine control unit.

How do I fix a P1229 diagnostic trouble code?

To fix P1229: Check wiring harness for damage. Check the sensor power circuit for a short circuit. Replace faulty sensor. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1229?

Yes, but get it checked soon

How much does it cost to fix P1229?

The estimated repair cost for P1229 is $6–56. Actual cost depends on your vehicle, location, and labor rates.

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