GM OBD/OBD2 Codes >> GM 91-92 1.9L VIN 9 TBI

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91-92 1.9L VIN 9 TBI
11Transaxle trouble code is present.
12PCM self-diagnostic test is OK.
13Oxygen sensor voltage stays between 0.35 and 0.55 volts for 20 seconds when the engine was at normal operating temperature.
14Coolant temperature sensor signal indicates a temperature of over 284° F.
15Coolant temperature sensor signal indicates a temperature colder than -31° F.
16PCM desired current did not match with feedback current.
17Coolant temperature signal did not change when PCM pull-up resistor switched.
19Crankshaft position signal (6X) did not occur between each reference pulse for 3 consecutive times.
21TPS voltage was above 4.9 volts.
22TPS voltage was under 0.2 volts.
23Inlet air temperature sensor signal showed an air temperature of -22° F.
24Vehicle speed sensor signal showed less than 1 MPH when engine speed was above idle and transmission was not in park or neutral.
25Inlet air temperature sensor signal showed an air temperature over 257° F.
26Any of the quad-driver module circuits had an open or short for 25 seconds.
27Any of the quad-driver module circuits had an open or short for 5 seconds.
32EGR system fault. Fuel mixture did not change when EGR solenoid was commanded ON and OFF.
33MAP sensor signal voltage was greater than 4.2 volts when throttle angle was less than 5%.
34MAP sensor signal voltage was less than 2 volts when engine speed was less than 1200 RPM.
35Idle speed was either above or below desired idle.
41Electronic ignition circuit was either open or grounded.
42The EST signal did not change when the ECM applied bypass voltage to the ignition module.
43The ESC circuit voltage was out of range for 10 seconds.
44Oxygen sensor voltage was under 0.3 volts for 3 minutes of closed loop operation.
48PCM detected extra or missing crank reference pulses.
49IAC was working improperly. Engine idle RPM was too high.
51PROM error.
52PCM sees a battery voltage either above 17 volts or below 11 volts.
53Knock sensor could not eliminate engine noise by retarding timing.
54Either the MAP sensor, Handwheel sensor, TPS, or all three sensors were grounded to 0 volts.
55Analog to digital signal conversion was incorrect.
58Battery voltage has changed more than 3 volts instantly.
63Option check-sum error. Invalid combinations of tire sizes or other options.
67Handwheel sensor voltage was either above 4.8 volts or below 0.2 volts.
71Engine coolant temperature was above 244° F.
72Engine coolant temperature was below 32° F after engine had been running for 5 minutes.
73Engine coolant temperature changed more than 59° F in 0.1 second.
74Engine coolant temperature sensor reading was less than the transaxle temperature sensor reading.
75Inlet air temperature reading changed more than 59° F in 0.1 second.
76MAP sensor signal did not change with a corresponding change in the TPS.
82PCM is out of calibration. Recalibrate PCM. If code 82 still exists then replace PCM.
84Communications error between engine control module and transaxle controller.
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