What Does P02F0 Mean?
The ECM has detected that the Cylinder 3 fuel injector circuit is operating outside the expected electrical range or performance parameters. The injector's current draw, voltage response, or switching time does not match the ECM's calibrated expectations, indicating degraded injector performance or a circuit fault specific to Cylinder 3.
Common Causes
35%
Degraded Cylinder 3 fuel injector with shifted coil resistance or slow mechanical response affecting circuit parameters
25%
Corroded or high-resistance connections in the Cylinder 3 injector harness or connector
20%
ECM injector driver producing abnormal current waveform for Cylinder 3 output
20%
Mismatched injector specification in Cylinder 3 from incorrect replacement part
Diagnostic Steps
1
Step 1: Measure Cylinder 3 injector coil resistance at the connector and compare to specification. Typical high-impedance injectors read 11-18 ohms.
2
Step 2: Use an oscilloscope with current clamp to capture the Cylinder 3 injector waveform. Compare the opening and closing current signatures to other cylinders.
3
Step 3: Inspect the Cylinder 3 injector connector for corrosion, terminal damage, and proper seating. Measure voltage drop across the connector with the injector energized.
4
Step 4: Swap Cylinder 3 injector with an adjacent cylinder, clear codes, and retest. If the fault moves, replace the injector with the correct specification part.
5
Step 5: Verify injector calibration codes are correctly entered in the ECM if applicable. On diesel systems, incorrect IQA (Injector Quantity Adjustment) codes cause performance range faults.
Estimated Repair Cost
$150 - $600
Parts + labor, varies by vehicle and location
The ECM has detected that the Cylinder 3 fuel injector circuit is operating outside the expected electrical range or performance parameters. The injector's current draw, voltage response, or switching time does not match the ECM's calibrated expectations, indicating degraded injector performance or ...
The most common cause of P02F0 (Cylinder 3 Injector Circuit Range/Performance) is: Degraded Cylinder 3 fuel injector with shifted coil resistance or slow mechanical response affecting circuit parameters
Typical repair costs for P02F0 range from $150 to $600, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Injector circuit performance issues on Cylinder 3 cause imprecise fueling, misfire risk, elevated emissions, and potential catalyst damage from incomplete combustion.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P02F0 to identify the root cause.
OBDHut Mobile App
Scan codes directly from your car with the OBDHut app.
Coming Soon
Quick Info
Category
Powertrain
System
Fuel Injection System
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
A quality scan tool helps you read codes, view live data, and clear faults.
