What Does P02F3 Mean?
The ECM has detected that the Cylinder 6 fuel injector circuit is operating outside the expected electrical range or performance parameters. The injector current draw, switching response, or voltage characteristics deviate from the ECM's calibrated expectations for Cylinder 6, indicating injector or circuit degradation.
Common Causes
35%
Degraded Cylinder 6 fuel injector with altered coil characteristics or mechanical sluggishness
25%
High-resistance or corroded wiring connections in the Cylinder 6 injector circuit
20%
ECM injector driver circuit abnormality affecting the Cylinder 6 output
20%
Incorrect specification injector in Cylinder 6 from a previous repair
Diagnostic Steps
1
Step 1: Measure Cylinder 6 injector coil resistance at the connector. Compare to manufacturer specification and to other cylinders in the set.
2
Step 2: Use an oscilloscope with current probe to capture the Cylinder 6 injector waveform. Look for abnormal peak current, slow response, or irregular hold current patterns.
3
Step 3: Inspect the Cylinder 6 injector connector for corrosion, heat damage, and terminal integrity. This cylinder often has limited access on V6 engines.
4
Step 4: Swap Cylinder 6 injector with a known-good cylinder, clear codes, and perform a drive cycle. Track whether the fault follows the injector or remains at position 6.
5
Step 5: Confirm the correct injector specification and calibration data are programmed for Cylinder 6 in the ECM.
Estimated Repair Cost
$150 - $650
Parts + labor, varies by vehicle and location
The ECM has detected that the Cylinder 6 fuel injector circuit is operating outside the expected electrical range or performance parameters. The injector current draw, switching response, or voltage characteristics deviate from the ECM's calibrated expectations for Cylinder 6, indicating injector or...
The most common cause of P02F3 (Cylinder 6 Injector Circuit Range/Performance) is: Degraded Cylinder 6 fuel injector with altered coil characteristics or mechanical sluggishness
Typical repair costs for P02F3 range from $150 to $650, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Cylinder 6 injector circuit performance faults cause imprecise fuel delivery, misfire potential, and elevated emissions that can damage the catalytic converter over time.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P02F3 to identify the root cause.
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Quick Info
Category
Powertrain
System
Fuel Injection System
Difficulty
Type
Generic (SAE)
Recommended Tools
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