Cylinder 11 Injector Circuit Range/Performance
The P02F8 code indicates that the Engine Control Module (ECM) has detected a malfunction in the electrical circuit of the fuel injector for cylinder 11. This could be due to an open or short circuit, or the injector's performance is outside the expected range. The ECM monitors the injector circuit for proper voltage and current flow; when it detects an anomaly, it sets this code. This issue can lead to misfires, poor fuel economy, and increased emissions.
1. Most Common Causes
- Faulty fuel injector on cylinder 11
- Open or short in the injector wiring harness
- Corroded or damaged connector at the injector
- Failed ECM (rare)
2. Symptoms You Will Notice
- Engine misfire or rough idle
- Check Engine Light illuminated
- Decreased fuel economy
- Possible hesitation or lack of power
3. Step-by-Step Diagnosis
Step 1: Use a scan tool to confirm the code and check for related codes.
Step 2: Visually inspect the injector connector and wiring for damage or corrosion.
Step 3: Measure resistance of the injector; compare to specifications (typically 11-16 ohms).
Step 4: Perform a power balance test to isolate the faulty injector.
Step 5: Check for voltage and ground at the injector connector with the engine running.
4. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive long distances as it can cause misfires, damage the catalytic converter, and reduce fuel economy. Have it diagnosed promptly.
How much does it cost to fix?▼
The cost typically ranges from $150 to $400, including parts and labor. A single injector replacement is around $100-$200, plus diagnostic time.
5. Commonly Affected Makes
This is a generic OBD2 code, potentially applicable to any manufacturer using this diagnostic standard.