Cylinder 11 Injector Circuit Range/Performance
The P02F8 code indicates that the Engine Control Module (ECM) has detected a malfunction in the electrical circuit or performance of the fuel injector for cylinder 11. This can be due to an open or short circuit, high resistance, or a faulty injector driver. The ECM monitors the injector circuit for proper voltage and current flow; when the readings fall outside the expected range, this code is set. This issue can lead to misfires, reduced fuel economy, and increased emissions.
01. Most Common Causes
- Faulty fuel injector on cylinder 11
- Open or short circuit in injector wiring or connector
- Failed ECM or injector driver
- Corrosion or damage at injector connector
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Engine misfire or rough idle
- Reduced engine performance and fuel economy
- Possible fuel odor or hard starting
03. Step-by-Step Diagnosis
Step 1: Scan for codes and record freeze frame data.
Step 2: Visually inspect injector connector and wiring for damage or corrosion.
Step 3: Measure resistance of cylinder 11 injector; compare to specifications (typically 11-17 ohms).
Step 4: Check for voltage and ground at injector connector with key on; use a noid light to test injector pulse.
Step 5: If injector and wiring are good, test ECM output or swap injector with another cylinder to see if code moves.
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 it can cause misfires, catalytic converter damage, and poor fuel economy. Have it diagnosed promptly.
How much does it cost to fix?▼
Repair costs range from $150 to $400 depending on whether the injector, wiring, or ECM needs replacement. Labor and parts vary by vehicle.