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Home >> Buick >> 1995 >> Century Custom >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - 2.2L >> Self-Diagnostic System >> Trouble Code Definition
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Trouble Code Definition

TROUBLE CODE DEFINITION

Code No. Circuit Affected
CODE 12 (1) No RPM Reference Pulse
CODE 13  Open Oxygen Sensor Circuit
CODE 14  Coolant Temp Sens Sgnl Vltge Low (Hi Temp Indicated)
CODE 15  Coolant Temp Sensor Signal Voltage Low
CODE 19  Intermittent 7X Signal
CODE 21  Throttle Position Sensor Signal Voltage High
CODE 22  Throttle Position Sensor Signal Voltage Low
CODE 23  IAT Sensor Signal Voltage High (Low Temp Indicated)
CODE 24  Vehicle Speed Sensor
CODE 25  IAT Sensor Signal Voltage Low (High Temp Indicated)
CODE 26  Quad-Driver Module Error
CODE 27  Quad-Driver No. 1 Error
CODE 28  Quad-Driver No. 2 Error
CODE 32  EGR System Error
CODE 33  MAP Sensor Signal Voltage High
CODE 34  MAP Sensor Signal Voltage Low
CODE 35  IAC Idle Speed Error
CODE 43  Knock Sensor Error
CODE 44  Lean Exhaust Indication
CODE 45  Rich Exhaust Indication
CODE 51  Faulty PROM/MEM-CAL
CODE 53  System Voltage High
CODE 55  PCM Error
CODE 55  Fuel Lean Monitor
CODE 66  A/C Pressure Sensor
(1) Display of a Code 12 is normal when reference pulses are not being received by control module (engine not running).
TROUBLE CODE CONVERSION

New Code No. Old Code No. Circuit
P0101 34 MAF Sensor
P0112 23 Air Temperature Sensor
P0113 25 Air Temperature Sensor
P0116 New Coolant Sensor Range
P0117 15 Coolant Temperature Sensor
P0118 14 Coolant Temperature Sensor
P0122 22 Throttle Position Sensor
P0123 21 Throttle Position Sensor
P0125 New Coolant Temperature Sensor
P0131 44 Oxygen Sensor
P0132 45 Oxygen Sensor
P0133 New Oxygen Sensor
P0134 13 Oxygen Sensor
P0135 New Oxygen Sensor Heater
P0137 New (Catalyst) Oxygen Sensor
P0138 New (Catalyst) Oxygen Sensor
P0140 New (Catalyst) Oxygen Sensor
P0151 44 Oxygen Sensor
P0152 45 Oxygen Sensor
P0153 New Oxygen Sensor
P0154 13 Oxygen Sensor
P0155 New Oxygen Sensor Heater
P0158 45 Oxygen Sensor
P0160 13 Oxygen Sensor
P0161 New Oxygen Sensor Heater
P0171 New Fuel Lean
P0172 New Fuel Rich
P0174 New Fuel Lean
P0175 New Fuel Rich
P0300 New Misfire
P0321 17 Spark Reference
P0325 43 Knock Sensor
P0341 18 Cam Signal
P0342 41 Cam Signal
P0401 53/54/55 EGR
P0420 New Catalyst System
P0501/0502 24 Vehicle Speed Sensor
P0703 38 TCC Brake Switch
P0705 31 Trans. Range Switch
P0712 59 Trans. Fluid Temp. Sensor
P0713 58 Trans. Fluid Temp. Sensor
P0740 39 TCC
P0755 36 Shift Solenoid "B"
P1114 New Coolant Sensor
P1115 New Coolant Sensor
P1133 New Oxygen Sensor
P1153 New Oxygen Sensor
P1158 New Oxygen Sensor
P1200 New Injector Circuit
P1257 57 Supercharger Boost
P1350/1361 42 Ignition
P1403/1404/1405 75/76/77 EGR Solenoid(s)
P1406 32 EGR
P1520 New Park/Neutral
P1530 69 A/C Pressure Sensor/Switch
P1531 66 A/C Charge Low
P1550 New Cruise
P1558 63 Cruise
P1561 61 Cruise
P1562 62 Cruise
P1565 65 Cruise
P1567 67 Cruise
P1568 68 Cruise
P1571 New Traction Control
P1573 New Traction Control
P1599 99 Cruise
P1619 New Oil Life Reset
P1623 51 PROM Error
P1626/1629 58 Pass-Key
P1630 16 Voltage High/Low
P1640 26/56 Quad-Driver
P1650 26/56 Quad-Driver
P1670 26/56 Quad-Driver
P1860 New TCC PWM Solenoid