LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Buick >> 1995 >> Regal Limited >> Repair and Diagnosis >> Quick Lookups >> DTC Index >> Engine Performance DTCS (3.8L)
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Engine Performance DTCS (3.8L)

ENGINE PERFORMANCE DTCS (3.8L)

DTC OEM Code Description
P0101 34 Mass Air Flow (MAF) Sensor Circuit
P0112 23 IAT Sensor Circuit Low Temperature Indicated
P0113 25 IAT Sensor Circuit High Temperature Indicated
P0117 15 Coolant Temp. Sensor Low Temperature Indicated
P0118 14 Coolant Temp. Sensor High Temperature Indicated
P0122 22 Throttle Position Sensor Signal Voltage Low
P0123 21 Throttle Position Sensor Signal Voltage High
P0125 New Coolant Temp Sensor Closed Loop Temp Not Met
P0131 44 Heated Oxygen Sensor Low Signal Voltage (Lean)
P0132 45 Heated Oxygen Sensor High Signal Voltage (Rich)
P0134 13 Heated Oxygen Sensor Open Circuit
P0137 New O2 Sensor No. 2 (Catalyst Monitor) Low Sgnl Vltge
P0138 New O2 Sensor No. 2 (Catalyst Monitor) Hi Sgnl Vltge
P0140 New Oxygen Sensor No. 2 (Catalyst Monitor) Open Ckt
P0171 New Fuel Trim Lean
P0172 New Fuel Trim Rich
P0300 New Misfire Detected
P0321 17 Spark Reference Circuit
P0341 18 Cam/Crank Error
P0342 41 Cam Signal Circuit
P0401 53 (EGR) Flow Test Failure
P0401 54 (EGR) Flow Test Failure
P0401 55 (EGR) Flow Test Failure
P0420 New Catalyst Sys, Low O2 Storage Capacity Indicated
P070 3 38 TCC Brake Switch Input
P070 5 31 Transaxle Range Switch
P0712 59 Transaxle Temp Sensor Low Temperature Indicated
P0713 58 Transaxle Temp Sensor High Temperature Indicated
P0740 39 Torque Converter Clutch
P075 5 36 Trans. Shift Solenoid "B"
P1406 32 EGR Valve Pintle Position
P1530 69 A/C Head Pressure Switch
P1531 66 Low A/C Refrigerant Charge
P1550 New Cruise Stepper Motor
P1623 51 PROM Error
P1630 16 System Voltage High/Low
P1640 26 QDM NO. 1 Circuit
P1640 56 QDM NO. 1 Circuit
P1650 26 QDM NO. 2
P1650 56 QDM NO. 2
P1670 26 QDM NO. 4
P1670 56 QDM NO. 4
P0325 43 Knock Sensor
P0501 24 VSS Circuit
P0502 24 VSS Circuit
P1350 42 IC Circuit
P1361 42 IC Circuit
P1626 58 PASS-KEY II Fuel Enable Circuit
P1629 58 PASS-KEY II Fuel Enable Circuit