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P0203 Diagnostic Trouble Code Discussion for March 2011

Fuel Injector 3 Control Circuit Malfunction

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Trouble Ticket Help Requests for DTC P0203
Help Request Posted
2000 Jeep Cherokee Classic 4.0L Hesitation, Cuts out, Misfire VIN: 1J4FF48S8Y
P0203: Fuel Injector 3 Control Circuit Malfunction. Hello again ALL, This Jeep indicates misfire and I have very rarely caught a couple light misfires on #3 cylinder. I suspect the #3 fuel injector is the problem but my bigger concern is customer states that engine ran so poorly that it barely moved at all. Th...
March 04, 2011
2002 Jeep Liberty Limited 3.7L Poor Idle Quality, Hesitation, MIL Lamp on VIN: 1J4GL48K72
P0203: Fuel Injector 3 Control Circuit Malfunction. OHM CHECKED ALL FUEL INJECTORS, INSPECTED ALL WIRING AND GROUNDS. RIGHT SIDE O2 SENSOR IS AT 5 VOLTS WITH KEY ON,once started drops down to zero volts. left side works good. injector ms left bank 4.5ms right bank 7.4ms. no vacuum leaks found. all fuel trims ar...
March 14, 2011