Cylinder 3 Injector Circuit Range/Performance
The P02F0 code indicates that the Engine Control Module (ECM) has detected an issue with the electrical circuit or performance of the fuel injector on cylinder 3. This could be due to a faulty injector, wiring problems, or a malfunctioning ECM. The injector circuit is monitored for proper voltage, resistance, and response time; any deviation from expected values triggers this code.
01. Most Common Causes
- Faulty fuel injector on cylinder 3
- Open or shorted wiring in injector circuit
- Poor electrical connection at injector or ECM
- Failed ECM (rare)
02. Symptoms You Will Notice
- Engine misfire on cylinder 3
- Rough idle or hesitation
- Check Engine Light illuminated
- Decreased fuel economy
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.
Step 3: Test injector resistance with a multimeter (specs: 11-18 ohms).
Step 4: Perform a injector balance test or flow test.
Step 5: Check for power and ground at injector connector with key on.
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 catalytic converter damage due to unburned fuel. Short trips to a repair shop are acceptable.
How much does it cost to fix?▼
The cost typically ranges from $150 to $400, including parts and labor, depending on whether the injector or wiring needs replacement.