Diagnostic Trouble Codes - 1990
Buick
13 Open Oxygen Sensor Circuit
14 Coolant Temperature Sensor (High Temp Indicated)
15 Coolant Temperature Sensor (Low Temp Indicated)
16 System Voltage High
21 Throttle Position Sensor (Signal Voltage High)
22 Throttle Position Sensor (Signal Voltage Low)
23 Manifold Air Temperature (MAT) Circuit (Low Sig.)
24 Vehicle Speed Sensor (VSS) Circuit
25 Manifold Air Temperature (MAT) High Temp Indicated
26 Quad-Driver (QDM) Circuit
27
28 Gear Switch Diagnosis
28
29 Gear Switch Diagnosis
31 Park/Neutral Switch Circuit
34 Mass Air Flow Sensor (MAF) (GM/SEC Low)
38 Brake Input Circuit
39 Torque Converter Clutch (TCC) Circuit
42 Electronic Spark Timing (EST) Circuit
43 Electronic Spark Control (ESC) Circuit
44 Oxygen Sensor Circuit (Lean Exhaust Indicated)
45 Oxygen Sensor Circuit (Rich Exhaust Indicated)
46 Power Steering Pressure Switch (PSPS) Circuit
48 Misfire Diagnosis
51 Mem-Cal Error
66 Low A/C Refrigerant Charge
69 A/C Head Pressure Switch Circuit
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Saturday, August 22nd, 2009 AT 4:15 AM
