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P0202 Fault Code in 2001 Jeep Cherokee Sport - Injector Circuit Open Cylinder 2

Model: 2001 Jeep Cherokee Sport Fault Code: P0202 Posted: 2015-03-05 22:31

The P0202 diagnostic trouble code indicates a malfunction in the injector circuit for Cylinder 2, not Cylinder 5 as previously stated. The vehicle runs smoothly with no stalling, power loss, or lag at any speed, which suggests the issue may be intermittent or related to wiring rather than engine performance. I need to get my car smogged soon, but the smog station requires me to drive it for an additional 100 miles before retesting. The battery had been dead for a long time, potentially causing the engine control module (ECM) to lose stored data — this may have contributed to misdiagnosed or incorrect codes. I am now confirming that the code is indeed P0202 and not a misread. Possible causes include a faulty fuel injector, damaged wiring harness, loose connectors, or an open circuit in the injector's electrical path. I plan to use a noid light to test the injector signal or swap the cylinder 2 injector with another cylinder to see if the code persists. If the code changes after swapping, it confirms a bad injector. If not, I will inspect the wiring and connectors for damage or corrosion.

Related fault codes
P0202
Comments (4)
Anonymous 2015-03-06 07:45

Please confirm the exact P0202 code is displayed — re-scan the vehicle to ensure accuracy. The correct code format should be P0xxx, not shortened.

Anonymous 2015-03-06 11:21

Apologies for the confusion earlier — I did shorten the code. It does start with PO, so the full code is indeed P0202.

Anonymous 2015-03-07 10:39

P0202 specifically refers to an open circuit in the fuel injector circuit for Cylinder 2, not Cylinder 5. To verify, use a noid light to test signal presence at the injector or swap the cylinder 2 injector with another cylinder. If the code persists after swapping, the issue is likely a faulty injector. If the code clears, inspect wiring and connectors for damage or loose connections.

Anonymous 2015-03-07 11:10

I will perform the tests as suggested — including using a noid light and injector swap. I’ll update with my findings once completed.