What Does P02F2 Mean?
The ECM has detected that the Cylinder 5 fuel injector circuit is operating outside the expected electrical range or performance parameters. The injector electrical characteristics do not match calibrated values, indicating degradation of the Cylinder 5 injector or its associated wiring and driver circuits. This applies to engines with five or more cylinders.
Common Causes
35%
Degraded Cylinder 5 fuel injector with shifted coil resistance or sluggish pintle response
25%
Corroded or damaged wiring connections in the Cylinder 5 injector circuit
20%
ECM injector driver circuit issue on the Cylinder 5 output channel
20%
Wrong specification replacement injector installed in Cylinder 5
Diagnostic Steps
1
Step 1: Measure Cylinder 5 injector coil resistance and compare to the manufacturer specification and to the other injectors. Note any deviation exceeding 10%.
2
Step 2: Capture the injector current waveform on Cylinder 5 with an oscilloscope. Compare peak current, hold current, and response timing to other cylinders on the same bank.
3
Step 3: Inspect the Cylinder 5 injector connector for corrosion and terminal damage. On V-configuration engines, Bank 2 connectors may be harder to access but are prone to heat-related damage.
4
Step 4: Swap Cylinder 5 injector with an adjacent cylinder on the same bank. Clear codes and retest to isolate the fault between the injector and the circuit.
5
Step 5: Verify correct injector part number and calibration coding if applicable. On some diesel systems, injector quantity adjustment (IQA) codes must be programmed per-cylinder.
Estimated Repair Cost
$150 - $650
Parts + labor, varies by vehicle and location
The ECM has detected that the Cylinder 5 fuel injector circuit is operating outside the expected electrical range or performance parameters. The injector electrical characteristics do not match calibrated values, indicating degradation of the Cylinder 5 injector or its associated wiring and driver c...
The most common cause of P02F2 (Cylinder 5 Injector Circuit Range/Performance) is: Degraded Cylinder 5 fuel injector with shifted coil resistance or sluggish pintle response
Typical repair costs for P02F2 range from $150 to $650, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Injector circuit range issues on Cylinder 5 cause imprecise fueling, misfire risk, and elevated emissions. Prolonged operation can damage the catalytic converter.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P02F2 to identify the root cause.
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Quick Info
Category
Powertrain
System
Fuel Injection System
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
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