Cylinder 12 Injector Restricted
The P02C8 code indicates that the engine control module (ECM) has detected a restriction in the fuel injector for cylinder 12. This can be caused by carbon buildup, debris, or a failing injector, leading to reduced fuel flow and improper air-fuel mixture. The restriction may cause misfires, reduced power, and increased emissions.
01. Most Common Causes
- Carbon buildup on injector tip
- Contaminated fuel causing debris
- Faulty injector internal mechanism
02. Symptoms You Will Notice
- Engine misfire on cylinder 12
- Rough idle or hesitation
- Decreased fuel economy
- Check Engine Light illuminated
03. Step-by-Step Diagnosis
Step 1: Scan for codes and record freeze frame data.
Step 2: Perform a fuel injector balance test to confirm restriction.
Step 3: Visually inspect injector for carbon or debris.
Step 4: Use a fuel injector cleaning kit or replace injector if necessary.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive long distances as the restriction can cause misfires and potential catalytic converter damage. Short trips to a repair shop are acceptable.
How much does it cost to fix?▼
Costs range from $50 to $150 for cleaning or up to $200-$400 for injector replacement, including labor.