OBD Guide

P12BD

Cylinder 6 Injection Timing Related

P12BD is an OBD-II diagnostic trouble code meaning: Cylinder 6 Injection Timing Related. Common causes: malfunction of the fuel injector of the 6th cylinder, problems with the injector electrical circuit. Estimated repair cost: $17–89.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$17–89 (est.)

Symptoms

  • Unstable engine idling
  • Reduced engine power
  • Increased fuel consumption
  • Engine vibration
  • Check Engine Light Illuminates

Causes

  • Malfunction of the fuel injector of the 6th cylinder
  • Problems with the injector electrical circuit
  • Malfunction of the engine control unit (ECU)
  • Dirty or clogged nozzle
  • Problems with the fuel pump or pressure regulator

How to Fix

  1. Check the condition and resistance of the fuel injector of the 6th cylinder
  2. Check the integrity of the injector electrical circuit
  3. Clean or replace fuel injector if necessary
  4. Check the pressure in the fuel system
  5. If necessary, reflash or replace the engine ECU

Related codes

FAQ

What does the P12BD code mean?

P12BD is an OBD-II diagnostic trouble code that indicates: Cylinder 6 Injection Timing Related

What causes a P12BD error code?

The most common causes of P12BD include: Malfunction of the fuel injector of the 6th cylinder; Problems with the injector electrical circuit; Malfunction of the engine control unit (ECU); Dirty or clogged nozzle.

How do I fix a P12BD diagnostic trouble code?

To fix P12BD: Check the condition and resistance of the fuel injector of the 6th cylinder. Check the integrity of the injector electrical circuit. Clean or replace fuel injector if necessary. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P12BD?

Yes, but get it checked soon

How much does it cost to fix P12BD?

The estimated repair cost for P12BD is $17–89. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat