What does auto scanner code p0204/ p0208/ mean

Asked by Sep 16, 2015 at 01:30 AM about the 2001 Mercury Grand Marquis LS

Question type: Maintenance & Repair

2 Answers

170

P0204 means that the PCM detected a fault in the injector or the wiring to the injector. It monitors the injector and when the injector is activated, the PCM expects to see the voltage pulled "low" or close to zero. The symptoms for this code will likely be a misfire and a rough running engine. Poor acceleration. The MIL will also be illuminated. This could come from a misfire on a cylinder. P0208 also could be from the first code. This is something that can only be diagnose by a service tech. It DOES NOT mean to replace it. The problem could be with something else in the circuit. It's not easy with these newer cars, but just to replace things will add up with BIG MONEY and not be that part.

3,495

p0204- injector 4----- wiring, injector,ecm..........p0208 injector 8. change the injectors to new locations, clear codes, start and see if your faults follows the injectors.

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