P0172
Trouble Code Conditions:
DTC P0101-P0103, P0107, P0108, P0121-P0123, P0130-P0138, P0140, P0141, P0201-P0206, P0300, P0401-P0405, P0410, P0440-P0446, P0506, P0507, P1404 or P1441 not set, engine started, vehicle driven at less than 82 mph at 550-4000 rpm, BARO sensor more than 70 kPa (10.1 psi), ECT sensor from 68-230ºF, IAT sensor from 64-158ºF, MAF sensor from 2.8-150 gm/s, MAP sensor from 16-105 kPa, fuel level over 10%, and the PCM detected the Long Term fuel trim value was less than -13% for 6 seconds.
Possible Causes:
Base engine "mechanical" fault affecting one or more cylinders
Excess fuel vapors in crankcase (the oil needs to be changed)
EVAP system component has failed or canister fuel saturated
Fuel control sensor is out of calibration (i.e., ECT, IAT or MAF)
Fuel delivery system supplying too much fuel during cruise or idle periods (e.g., faulty fuel pump, or faulty pressure regulator)
Fuel injector(s) is leaking or stuck partially open (one or more)
HO2S is contaminated, deteriorated or it has failed
P0201
Trouble Code Conditions:
Engine started; engine speed over 400 rpm, system voltage over 10.0v and the PCM detected an unexpected voltage condition on the Fuel Injector driver circuit for Cylinder 1 for 5 seconds. Note: Drive the vehicle at cruise speed. Record the misfire current counters for review to detect if more than one cylinder is misfiring.
Possible Causes:
Injector 1 power circuit (B+) is open (check the power fuse)
Injector 1 control circuit is open between injector and PCM
Injector 1 control circuit is grounded between injector and PCM
Injector 1 is damaged or it has failed
PCM is damaged
P0202
Trouble Code Conditions:
Engine started; engine speed over 400 rpm, system voltage over 10.0v and the PCM detected an unexpected voltage condition on the Fuel Injector driver circuit for Cylinder 2 for 5 seconds. Note: Drive the vehicle at cruise speed. Record the misfire current counters for review to detect if more than one cylinder is misfiring.
Possible Causes:
Injector 2 power circuit (B+) is open (check the power fuse)
Injector 2 control circuit is open between injector and PCM
Injector 2 control circuit is grounded between injector and PCM
Injector 2 is damaged or it has failed
PCM is damaged
P0203
Trouble Code Conditions:
Engine started; engine speed over 400 rpm, system voltage over 10.0v and the PCM detected an unexpected voltage condition on the Fuel Injector driver circuit for Cylinder 3 for 5 seconds. Note: Drive the vehicle at cruise speed. Record the misfire current counters for review to detect if more than one cylinder is misfiring.
Possible Causes:
Injector 3 power circuit (B+) is open (check the power fuse)
Injector 3 control circuit is open between injector and PCM
Injector 3 control circuit is grounded between injector and PCM
Injector 3 is damaged or it has failed
PCM is damaged
P0204
Trouble Code Conditions:
Engine started; engine speed over 400 rpm, system voltage over 10.0v and the PCM detected an unexpected voltage condition on the Fuel Injector driver circuit for Cylinder 4 for 5 seconds. Note: Drive the vehicle at cruise speed. Record the misfire current counters for review to detect if more than one cylinder is misfiring.
Possible Causes:
Injector 4 power circuit (B+) is open (check the power fuse)
Injector 4 control circuit is open between injector and PCM
Injector 4 control circuit is grounded between injector and PCM
Injector 4 is damaged or it has failed
PCM is damaged
P0205
Trouble Code Conditions:
Engine started; engine speed over 400 rpm, system voltage over 10.0v and the PCM detected an unexpected voltage condition on the Fuel Injector driver circuit for Cylinder 5 for 5 seconds. Note: Drive the vehicle at cruise speed. Record the misfire current counters for review to detect if more than one cylinder is misfiring.
Possible Causes:
Injector 5 power circuit (B+) is open (check the power fuse)
Injector 5 control circuit is open between injector and PCM
Injector 5 control circuit is grounded between injector and PCM
Injector 5 is damaged or it has failed
PCM is damaged
p0206
Trouble Code Conditions:
Engine started; engine speed over 400 rpm, system voltage over 10.0v and the PCM detected an unexpected voltage condition on the Fuel Injector driver circuit for Cylinder 6 for 5 seconds. Note: Drive the vehicle at cruise speed. Record the misfire current counters for review to detect if more than one cylinder is misfiring.
Possible Causes:
Injector 6 power circuit (B+) is open (check the power fuse)
Injector 6 control circuit is open between injector and PCM
Injector 6 control circuit is grounded between injector and PCM
Injector 6 is damaged or it has failed
PCM is damaged
p0230
Trouble Code Conditions:
Engine started; engine speed over 400 rpm, system voltage over 10.0v and the PCM detected that the Actual and Commanded state of the Fuel Pump driver control circuit did not match for 2.5 seconds.
Possible Causes:
Fuel pump relay power circuit is open (test B+ from fuse box)
Fuel pump control circuit is open or shorted to ground
Fuel pump control circuit is shorted to system power
PCM has failed
TSB 00-06-04-023 contains a repair procedure for this code
