OBD Guide

P029D

Cylinder 1 - Injector Leaking

P029D is an OBD-II diagnostic trouble code meaning: Cylinder 1 - Injector Leaking. Common causes: worn injector seals, mechanical damage to the injector. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Unstable engine operation
  • Increased fuel consumption
  • Misfires
  • Smell of gasoline in the cabin or under the hood

Causes

  • Worn injector seals
  • Mechanical damage to the injector
  • Nozzle contamination
  • Problems with the fuel system (pressure)

How to Fix

  1. Check the tightness of the injector of cylinder 1
  2. Replace injector seals if necessary
  3. Clean or replace the injector
  4. Check the pressure in the fuel system

Related codes

Error P029D by Vehicle Brand

FAQ

What does the P029D code mean?

P029D is an OBD-II diagnostic trouble code that indicates: Cylinder 1 - Injector Leaking

What causes a P029D error code?

The most common causes of P029D include: Worn injector seals; Mechanical damage to the injector; Nozzle contamination; Problems with the fuel system (pressure).

How do I fix a P029D diagnostic trouble code?

To fix P029D: Check the tightness of the injector of cylinder 1. Replace injector seals if necessary. Clean or replace the injector. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P029D?

Limited driving only, diagnose soon

How much does it cost to fix P029D?

The estimated repair cost for P029D is $56–167. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat