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

  1. Step 1: Check cyl 3 injector resistance
    Resistance within range
  2. Step 2: Check connector and wiring
    All intact
  3. Step 3: Test with noid light
    Noid flashes
  4. Step 4: Replace injector if open
    Cylinder 3 fires
  5. 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.

Related OBD-II Generic (SAE J2012) Fault Codes

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Source: SAE J2012 standard DTC list + OBD-II portal

Category: OBD-II