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Home >> Buick >> 1995 >> Regal Limited >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - 3.8L >> Self-Diagnostic System >> Trouble Code Definition
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Trouble Code Definition

TROUBLE CODE CONVERSION (1)

New Code No. Old Code No. Circuit
DTC P0101  34 Mass Air Flow (MAF) Sensor Circuit
DTC P0112  23 IAT Sensor Circuit Low Temperature Indicated
DTC P0113  25 IAT Sensor Circuit High Temperature Indicated
DTC P0117  15 Coolant Temp. Sensor Low Temperature Indicated
DTC P0118  14 Coolant Temp. Sensor High Temperature Indicated
DTC P0122  22 Throttle Position Sensor Signal Voltage Low
DTC P0123  21 Throttle Position Sensor Signal Voltage High
DTC P0125  New Coolant Temp Sensor Closed Loop Temp Not Met
DTC P0131  44 Heated Oxygen Sensor Low Signal Voltage (Lean)
DTC P0132  45 Heated Oxygen Sensor High Signal Voltage (Rich)
DTC P0134  13 Heated Oxygen Sensor Open Circuit
DTC P0137  New O2 Sensor No. 2 (Catalyst Monitor) Low Sgnl Vltge
DTC P0138  New O2 Sensor No. 2 (Catalyst Monitor) Hi Sgnl Vltge
DTC P0140  New Oxygen Sensor No. 2 (Catalyst Monitor) Open Ckt
DTC P0171  New Fuel Trim Lean
DTC P0172  New Fuel Trim Rich
DTC P0300  New Misfire Detected
DTC P0321  17 Spark Reference Circuit
P0325 43 Knock Sensor
DTC P0341  18 Cam/Crank Error
DTC P0342  41 Cam Signal Circuit
DTC P0401  53/54/55 (EGR) Flow Test Failure
DTC P0420  New Catalyst Sys, Low O2 Storage Capacity Indicated
DTCS P0501/P0502  24 VSS Circuit
DTC P0703  38 TCC Brake Switch Input
DTC P0705  31 Transaxle Range Switch
DTC P0712  59 Transaxle Temp Sensor Low Temperature Indicated
DTC P0713  58 Transaxle Temp Sensor High Temperature Indicated
DTC P0740  39 Torque Converter Clutch
DTC P0755  36 Trans. Shift Solenoid "B"
DTCS P1350/P1361  42 IC Circuit
DTC P1406  32 EGR Valve Pintle Position
DTC P1530  69 A/C Head Pressure Switch
DTC P1531  66 Low A/C Refrigerant Charge
DTC P1550  New Cruise Stepper Motor
DTC P1623  51 PROM Error
DTCS P1626/1629  58 PASS-KEY II Fuel Enable Circuit
DTC P1630  16 System Voltage High/Low
DTC P1640  26/56 QDM NO. 1 Circuit
DTC P1650  26/56 QDM NO. 2
DTC P1670  26/56 QDM NO. 4
(1) All P0 and P1 codes are located at the end of the pre-existing code charts.