OBD Guide

P12BF

Cylinder 7 Injection Timing Related

P12BF is an OBD-II diagnostic trouble code meaning: Cylinder 7 Injection Timing Related. Common causes: malfunction of the fuel injector of cylinder 7, problems with the high pressure fuel pump. Estimated repair cost: $17–89.

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

Symptoms

  • Uneven engine operation
  • Reduced power and throttle response
  • Increased fuel consumption
  • Increased emissions of harmful substances
  • Possible misfire in cylinder 7

Causes

  • Malfunction of the fuel injector of cylinder 7
  • Problems with the high pressure fuel pump
  • Contaminated or damaged fuel lines
  • Malfunction of sensors affecting injection timing calculation
  • Problems with wiring to the injector

How to Fix

  1. Diagnostics of the condition of the injector of cylinder 7
  2. Checking the fuel system pressure
  3. Diagnostics of the high pressure fuel pump operation
  4. Checking the integrity of electrical wiring and contacts
  5. Cleaning or replacing faulty components

Related codes

FAQ

What does the P12BF code mean?

P12BF is an OBD-II diagnostic trouble code that indicates: Cylinder 7 Injection Timing Related

What causes a P12BF error code?

The most common causes of P12BF include: Malfunction of the fuel injector of cylinder 7; Problems with the high pressure fuel pump; Contaminated or damaged fuel lines; Malfunction of sensors affecting injection timing calculation.

How do I fix a P12BF diagnostic trouble code?

To fix P12BF: Diagnostics of the condition of the injector of cylinder 7. Checking the fuel system pressure. Diagnostics of the high pressure fuel pump operation. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P12BF?

Yes, but get it checked soon

How much does it cost to fix P12BF?

The estimated repair cost for P12BF is $17–89. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat