Cylinder 5 Injector Circuit Range/Performance
The P02F2 code indicates that the Engine Control Module (ECM) has detected a malfunction in the electrical circuit or performance of the fuel injector for cylinder 5. This can be due to an open or short circuit, high resistance, or a mechanical issue with the injector itself, affecting fuel delivery and combustion.
1. Most Common Causes
- Faulty fuel injector on cylinder 5 (open or shorted coil, clogged nozzle, or leaking)
- Open circuit, short to ground, or short to power in the injector control wiring
- Corroded, bent pins, or poor connection at the injector connector
- Damaged injector driver in the PCM/ECM
- Engine mechanical issues affecting cylinder 5 compression
- Contaminated fuel or incorrect fuel pressure
2. Symptoms You Will Notice
- Engine misfire on cylinder 5
- Rough idle or hesitation
- Check Engine Light illuminated
- Decreased fuel economy
3. Step-by-Step Diagnosis
Step 1: Scan for codes and record freeze frame data.
Step 2: Visually inspect injector connector and wiring for damage.
Step 3: Measure injector resistance with a multimeter (spec: 11-17 ohms).
Step 4: Perform a injector balance test or use a noid light to check pulse.
Step 5: If wiring and injector are good, test ECM output or swap injector to another cylinder.
4. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive long distances as it can cause engine misfire, catalytic converter damage, and poor performance. Immediate diagnosis is advised.
How much does it cost to fix?▼
The cost typically ranges from $150 to $400, including parts and labor. 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.