Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2001 Chevrolet Venture Base, Van Cargo ExtendedFACTORY OEM SERVICE PROCEDURE
Engine Controls Self-Diagnostics
- Model Identification
- Introduction
- Self-Diagnostic System
- Programming
- Inspection/Maintenance Procedures
- Drive Cycles
- Inspection/Maintenance Complete System Set Procedure
- Inspection/Maintenance System Check
- Inspection/Maintenance Air System Set Procedure
- Inspection/Maintenance Catalyst System Set Procedure
- Inspection/Maintenance EGR Procedure
- Inspection/Maintenance Evaporative Emission System Set Procedure
- Inspection/Maintenance Heated Oxygen Sensor/Oxygen Sensor System Set Procedure
- Inspection/Maintenance Heated Oxygen Sensor Heater System Set Procedure
- Summary
- Diagnostic Trouble Code Definitions
- Scan Tool Data
- Circuit Tests
- Diagnostic Tests
- Notes
- DTC P0030: Ho2S No. 1 Heater Control Circuit Voltage Greater Than Pcm Internal Driver Capacity
- DTC P0101: Mass Airflow Sensor System Performance
- DTC P0102: Mass Airflow Sensor Circuit - Low Frequency
- DTC P0103: Mass Airflow Sensor Circuit - High Frequency
- DTC P0107: Manifold Absolute Pressure Sensor Circuit - Low Voltage
- DTC P0108: Manifold Absolute Pressure Sensor Circuit - High Voltage
- DTC P0112: Intake Air Temperature Sensor Circuit - Low Voltage
- DTC P0113: Intake Air Temperature Sensor Circuit - High Voltage
- DTC P0116: Engine Coolant Temperature & Intake Air Temperature Difference Out-Of-Range ("A" & "B" Series)
- DTC P0117: Engine Coolant Temperature Sensor Circuit - Low Voltage
- DTC P0118: Engine Coolant Temperature Sensor Circuit - High Voltage
- DTC P0121: Throttle Position Sensor Performance
- DTC P0122: Throttle Position Sensor Circuit - Low Voltage
- DTC P0123: Throttle Position Sensor Circuit - High Voltage
- DTC P0125: Engine Coolant Temperature Excessive Time To Enter Closed-Loop Fuel Control
- DTC P0128: Engine Coolant Fails To Reach Preset Target Temperature
- DTC P0130: Pcm Detects An Active Ho2S With Improper Voltage
- DTC P0131: Heated Oxygen Sensor No. 1 Circuit - Low Voltage
- DTC P0132: Heated Oxygen Sensor No. 1 Circuit - High Voltage
- DTC P0133: Heated Oxygen Sensor No. 1 Circuit - Slow Response
- DTC P0134: Heated Oxygen Sensor No. 1 Circuit Insufficient Activity
- DTC P0135: Heated Oxygen Sensor No. 1 Heater Performance
- DTC P0137: Heated Oxygen Sensor No. 2 Circuit - Low Voltage
- DTC P0138: Heated Oxygen Sensor No. 2 Circuit - High Voltage
- DTC P0140: Heated Oxygen Sensor No. 2 Circuit Insufficient Activity ("A" & "B" Series)
- DTC P0140: Heated Oxygen Sensor No. 2 Circuit Insufficient Activity ("U" Series)
- DTC P0141: Heated Oxygen Sensor No. 2 Heater Circuit
- DTC P0171: Fuel Trim System - Lean
- DTC P0172: Fuel Trim System - Rich
- DTC P0201-206: Injector Control Circuit
- DTC P0230: Fuel Pump Control Circuit
- DTC P0300-P0306: Engine Misfire Detected
- DTC P0325: Knock Sensor Module Circuit
- DTC P0327: Knock Sensor Circuit - No Activity
- DTC P0336: Crankshaft Position Sensor Circuit Performance
- DTC P0341: Camshaft Position Sensor Circuit
- DTC P0401: EGR System - Insufficient Flow
- DTC P0403: EGR Solenoid Control Circuit
- DTC P0404: EGR Open Position Performance
- DTC P0405: EGR Sensor Circuit - Low Voltage
- DTC P0410: Secondary Air Injection System
- DTC P0412: Secondary Air Injection Pump Relay Control Circuit
- DTC P0418: Secondary Air Injection Pump Relay Control Circuit - Improper Voltage
- DTC P0420: Catalyst System - Low Efficiency
- DTC P0440: Evaporative Emission System
- DTC P0442: Evaporative Emission Control System - Small Leak Detected
- DTC P0443: Evaporative Purge Solenoid Control Circuit
- DTC P0446: Evaporative Emission Vent System Performance ("A" & "B" Series)
- DTC P0446: Evaporative Emission Vent System Performance ("U" Series)
- DTC P0449: Evaporative Emission Vent Solenoid Control Circuit
- DTC P0452: Fuel Tank Pressure Sensor Circuit - Low Voltage
- DTC P0453: Fuel Tank Pressure Sensor Circuit - High Voltage
- DTC P0462: Fuel Level Sensor Circuit - Low Voltage
- DTC P0463: Fuel Level Sensor Circuit - High Voltage
- DTC P0480: Cooling Fan Relay No. 1 Control Circuit
- DTC P0481: Cooling Fan Relay No. 2 Control Circuit
- DTC P0506: Idle Speed - Low
- DTC P0507: Idle Speed - High
- DTC P0530: A/C Refrigerant Pressure Sensor Circuit
- DTC P0560: System Voltage
- DTC P0601-P0607, P1600, P1621, P1627, P1680, P1681 Or P1683: Pcm Not Programmed ("A" & "B"Series)
- DTC P0601: Pcm Memory ("U" Series)
- DTC P0602: Pcm Not Programmed ("U" Series)
- DTC P0620: Generator Performance
- DTC P0650: Malfunction Indicator Light Control Circuit
- DTC P0719: Torque Converter Clutch Brake Switch Open
- DTC P0724: Torque Converter Clutch Brake Switch Closed
- DTC P1106: Manifold Absolute Pressure Sensor Circuit Intermittent High Voltage
- DTC P1107: Manifold Absolute Pressure Sensor Circuit Intermittent Low Voltage
- DTC P1111: Intake Air Temperature Sensor Circuit Intermittent High Voltage
- DTC P1112: Intake Air Temperature Sensor Circuit Intermittent Low Voltage
- DTC P1114: Engine Coolant Temperature Sensor Circuit Intermittent Low Voltage
- DTC P1115: Engine Coolant Temperature Sensor Circuit Intermittent High Voltage
- DTC P1121: Throttle Position Sensor Circuit Intermittent High Voltage
- DTC P1122: Throttle Position Sensor Circuit Intermittent Low Voltage
- DTC P1133: Heated Oxygen Sensor No. 1 - Insufficient Switching
- DTC P1134: Heated Oxygen Sensor No. 1 Transition Time Ratio
- DTC P1189: Engine Oil Pressure Switch Signal Circuit
- DTC P1336: Crankshaft Position System Variation Not Learned
- DTC P1351: Ignition Control Circuit - High Voltage
- DTC P1352: Ignition By-Pass Circuit - High Voltage
- DTC P1361: Ignition Control Circuit - Low Voltage
- DTC P1362: Ignition By-Pass Circuit - Low Voltage
- DTC P1374: Crankshaft Position High-To-Low Resolution Frequency Correlation
- DTC P1380: Misfire Detected - Rough Road Data Not Available
- DTC P1381: Misfire Detected - No Communications With Brake Control Module
- DTC P1404: EGR Valve Closed Position Performance
- DTC P1441: Evaporative Emission System Vacuum Is Greater Than Predetermined Value ("A" & "B" Series)
- DTC P1441: Evaporative Emission System Flow During Non-Purge ("U" Series)
- DTC P1546: A/C Clutch Relay Control Circuit
- DTC P1571: Traction Control Torque Request Circuit
- DTC P1626: Theft Deterrent Fuel Enable Signal Lost
- DTC P1630: Theft Deterrent Learn Mode Active
- DTC P1631: Theft Deterrent Start Enable Signal Not Correct
- DTC P1635: 5-Volt Reference "A" Circuit
- DTC P1639: 5-Volt Reference 2 Circuit ("A" & "B" Series)
- DTC P1639: 5-Volt Reference "B" Circuit ("U" Series)
- DTC P1640: Excessive Voltage Detected On Output Driver No. 1 Circuit
- DTC P1650: Excessive Voltage Detected On Output Driver No. 2 Circuit
- DTC P1660: Excessive Voltage Detected On Output Driver No. 3 Circuit
- DTC P1670: Excessive Voltage Detected On Output Driver No. 4 Circuit
- DTC P1689: Traction Control Delivered Torque Output Circuit
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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