OBD Guide

P02BB

Cylinder 9 - Fuel Trim at Min Limit

P02BB is an OBD-II diagnostic trouble code meaning: Cylinder 9 - Fuel Trim at Min Limit. Common causes: air leak in the intake tract, dirty or faulty fuel injectors. 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
  • Power reduction
  • Increased fuel consumption
  • Misfire in cylinder 9

Causes

  • Air leak in the intake tract
  • Dirty or faulty fuel injectors
  • Low fuel pressure
  • Malfunction of the oxygen sensor (lambda probe)
  • Cylinder 9 injector wiring harness problems

How to Fix

  1. Check the tightness of the intake tract
  2. Check the condition of the fuel injectors
  3. Measure fuel pressure
  4. Check the operation of the oxygen sensor
  5. Inspect the cylinder 9 injector wiring harness

Related codes

Error P02BB by Vehicle Brand

FAQ

What does the P02BB code mean?

P02BB is an OBD-II diagnostic trouble code that indicates: Cylinder 9 - Fuel Trim at Min Limit

What causes a P02BB error code?

The most common causes of P02BB include: Air leak in the intake tract; Dirty or faulty fuel injectors; Low fuel pressure; Malfunction of the oxygen sensor (lambda probe).

How do I fix a P02BB diagnostic trouble code?

To fix P02BB: Check the tightness of the intake tract. Check the condition of the fuel injectors. Measure fuel pressure. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P02BB?

Limited driving only, diagnose soon

How much does it cost to fix P02BB?

The estimated repair cost for P02BB is $56–167. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat