Applicable Systems
OBD-II
Symptoms
Cylinder 3 fuel injector circuit open; misfire on cylinder 3.
Possible Causes
- Injector connector issue
- Injector coil failure
- Wiring open between injector and ECM
Troubleshooting Steps
- Step 1: Check cyl 3 injector resistance
Resistance within range - Step 2: Check connector and wiring
All intact - Step 3: Test with noid light
Noid flashes - Step 4: Replace injector if open
Cylinder 3 fires - Step 5: Clear code
No misfire
How to Reset
Clear with OBD-II scanner.
Common Replacement Parts
- Fuel Injector (OEM spec)
Frequently Asked Questions
- Q: Same diagnosis for all P020x codes?
Yes, P0201-P0208 all follow same diagnostic procedure. Only difference is which cylinder is affected.
Source: SAE J2012 standard DTC list + OBD-II portal
Category: OBD-II