LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> GMC >> 2000 >> Yukon Denali >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Self-Diagnostics - Gasoline - 4.8L, 5.3L & 6.0L >> Self-Diagnostic System >> Diagnostic Trouble Code Definitions
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Diagnostic Trouble Code Definitions

NOTE: Use of Tech 1 or Tech 2 scan tool is required to retrieve DTCs. Refer to user reference manual supplied with scan tool.
DIAGNOSTIC TROUBLE CODE DEFINITIONS

DTC Definition
P0101  Mass Airflow System Performance
P0102  Mass Airflow Sensor Circuit - Low Frequency
P0103  Mass Airflow Sensor Circuit - High Frequency
P0107  Manifold Absolute Pressure Sensor Circuit - Low Voltage
P0108  Manifold Absolute Pressure Sensor Circuit - High Voltage
P0112  Intake Air Temperature Circuit - Low Voltage
P0113  Intake Air Temperature Sensor Circuit - High Voltage
P0117  Engine Coolant Temperature Sensor Circuit - Low Voltage
P0118  Engine Coolant Temperature Sensor Circuit - High Voltage
P0121  Throttle Position Sensor Circuit - Insufficient Activity
P0122  Throttle Position Sensor Circuit - Low Voltage
P0123  Throttle Position Sensor Circuit - High Voltage
P0125  Engine Coolant Temperature Excessive Time To Enter Closed Loop Fuel Control
P0131  Heated Oxygen Sensor No. 1, Bank 1 Circuit - Low Voltage (Except RPO OSG)
P0131  Heated Oxygen Sensor No. 1, Bank 1 Circuit - Low Voltage (RPO OSG)
P0132  Heated Oxygen Sensor No. 1, Bank 1 Circuit - High Voltage (Except RPO OSG)
P0132  Heated Oxygen Sensor No. 1, Bank 1 Circuit - High Voltage (RPO OSG)
P0133  Heated Oxygen Sensor No. 1, Bank 1 Circuit - Slow Response (Except RPO OSG)
P0133  Heated Oxygen Sensor No. 1, Bank 1 Circuit - Slow Response (RPO OSG)
P0134  Heated Oxygen Sensor No. 1, Bank 1 Circuit - Insufficient Activity (Except RPO OSG)
P0134  Heated Oxygen Sensor No. 1, Bank 1 Circuit - Insufficient Activity (RPO OSG)
P0135  Heated Oxygen Sensor No. 1, Bank 1 Heater Circuit (Except RPO OSG)
P0135  Heated Oxygen Sensor No. 1, Bank 1 Heater Circuit (RPO OSG)
P0137  Heated Oxygen Sensor No. 2, Bank 1 Circuit - Low Voltage (Except RPO OSG)
P0137  Heated Oxygen Sensor No. 2, Bank 1 Circuit - Low Voltage (RPO OSG)
P0138  Heated Oxygen Sensor No. 2, Bank 1 Circuit - High Voltage (Except RPO OSG)
P0138  Heated Oxygen Sensor No. 2, Bank 1 Circuit - High Voltage (RPO OSG)
P0140  Heated Oxygen Sensor No. 2, Bank 1 Circuit - Insufficient Activity (Except RPO OSG)
P0140  Heated Oxygen Sensor No. 2, Bank 1 Circuit - Insufficient Activity (RPO OSG)
P0141  Heated Oxygen Sensor No. 2, Bank 1 Heater Circuit (Except RPO OSG)
P0141  Heated Oxygen Sensor No. 2, Bank 1 Heater Circuit (RPO OSG)
P0151  Heated Oxygen Sensor No. 1, Bank 2 Circuit - Low Voltage (Except RPO OSG)
P0151  Heated Oxygen Sensor No. 1, Bank 2 Circuit - Low Voltage (RPO OSG)
P0152  Heated Oxygen Sensor No. 1, Bank 2 Circuit - High Voltage (Except RPO OSG)
P0152  Heated Oxygen Sensor No. 1, Bank 2 Circuit - High Voltage (RPO OSG)
P0153  Heated Oxygen Sensor No. 1, Bank 2 Circuit - Slow Response (Except RPO OSG)
P0153  Heated Oxygen Sensor No. 1, Bank 2 Circuit - Slow Response (RPO OSG)
P0154  Heated Oxygen Sensor No. 1, Bank 2 Circuit - Insufficient Activity (Except RPO OSG)
P0154  Heated Oxygen Sensor No. 1, Bank 2 Circuit - Insufficient Activity (RPO OSG)
P0155  Heated Oxygen Sensor No. 1, Bank 2 Heater Circuit (Except RPO OSG)
P0155  Heated Oxygen Sensor No. 1, Bank 2 Heater Circuit (RPO OSG)
P0157  Heated Oxygen Sensor No. 2, Bank 2 Circuit - Low Voltage (Except RPO OSG)
P0157  Heated Oxygen Sensor No. 2, Bank 2 Circuit - Low Voltage (RPO OSG)
P0158  Heated Oxygen Sensor No. 2, Bank 2 Circuit - High Voltage (Except RPO OSG)
P0158  Heated Oxygen Sensor No. 2, Bank 2 Circuit - High Voltage (RPO OSG)
P0160  Heated Oxygen Sensor No. 2, Bank 2 Circuit - Insufficient Activity (Except RPO OSG)
P0160  Heated Oxygen Sensor No. 2, Bank 2 Circuit - Insufficient Activity (RPO OSG)
P0161  Heated Oxygen Sensor No. 2, Bank 2 Heater Circuit (Except RPO OSG)
P0161  Heated Oxygen Sensor No. 2, Bank 2 Heater Circuit (RPO OSG)
P0171  Fuel Trim System Lean - Bank 1
P0172  Fuel Trim System Rich - Bank 1
P0174  Fuel Trim System Lean - Bank 2
P0175  Fuel Trim System Rich - Bank 2
P0200  Injector Control Circuit
P0230  Fuel Pump Control Circuit
P0300  Engine Misfire Detected
P0325  Knock Sensor Module Performance
P0327  Knock Sensor Circuit - Front
P0332  Knock Sensor No. 2 Circuit
P0335  Crankshaft Position Sensor Circuit
P0336  Crankshaft Position Sensor Performance
P0341  Camshaft Position Sensor Performance
P0342  Camshaft Position Sensor Circuit - Low Voltage
P0343  Camshaft Position Sensor Circuit - High Voltage
P0351  Ignition Coil No. 1 Control Circuit
P0352  Ignition Coil No. 2 Control Circuit
P0353  Ignition Coil No. 3 Control Circuit
P0354  Ignition Coil No. 4 Control Circuit
P0355  Ignition Coil No. 5 Control Circuit
P0356  Ignition Coil No. 6 Control Circuit
P0357  Ignition Coil No. 7 Control Circuit
P0358  Ignition Coil No. 8 Control Circuit
P0401  EGR System - Insufficient Flow
P0404  EGR Valve Open Position Performance
P0405  EGR Position Sensor Circuit - Low Voltage
P0410  Secondary Air Injection System
P0418  Secondary Air Injection Pump Relay Control Circuit
P0420  Catalyst System - Low Efficiency (Bank 1)
P0430  Catalyst System - Low Efficiency (Bank 2)
P0440  Evaporative Emission System
P0442  Evaporative Emission System - Small Leak Detected
P0443  Evaporative Purge Solenoid Control Circuit
P0446  Evaporative Emission Vent System Performance
P0449  Evaporative Canister Vent Solenoid Control Circuit
P0452  Fuel Tank Pressure Sensor Circuit - Low Voltage
P0453  Fuel Tank Pressure Sensor Circuit - High Voltage
P0461  Fuel Level Sensor Performance
P0462  Fuel Level Sensor Circuit - Low Voltage
P0463  Fuel Level Sensor Circuit - High Voltage
P0500  Vehicle Speed Sensor Circuit
P0506  Idle Speed - Low
P0507  Idle Speed - High
P0562  System Voltage - Low
P0563  System Voltage - High
P0601  Control Module Read Only Memory
P0602  Control Module Not Programmed
P0604  Control Module Random Access Memory
P0608  Vehicle Speed Sensor Output Circuit
P0650  Malfunction Indicator Light Control Circuit
P0654  Engine Speed Output Circuit
P0704  Clutch Switch Circuit
P0705  Transmission Range Switch Circuit
P0706  Transmission Range Switch Performance
P1111  Intake Air Temperature Sensor Circuit Intermittent High Voltage
P1112  Intake Air Temperature Sensor Circuit Intermittent Low Voltage
P1114  Engine Coolant Temperature Sensor Circuit Intermittent Low Voltage
P1115  Engine Coolant Temperature Sensor Circuit Intermittent High Voltage
P1120  Throttle Position Sensor Circuit No. 1 Circuit
P1121  Throttle Position Sensor Circuit Intermittent High Voltage
P1122  Throttle Position Sensor Circuit Intermittent Low Voltage
P1125  Accelerator Pedal Position System
P1133  Heated Oxygen Sensor No. 1, Bank 1 Insufficient Switching (Except RPO OSG)
P1133  Heated Oxygen Sensor No. 1, Bank 1 Insufficient Switching (RPO OSG)
P1134  Heated Oxygen Sensor No. 1, Bank 1 Transition Time Ratio (Except RPO OSG)
P1134  Heated Oxygen Sensor No. 1, Bank 1 Transition Time Ratio (RPO OSG)
P1153  Heated Oxygen Sensor No. 1, Bank 2 Insufficient Switching (Except RPO OSG)
P1153  Heated Oxygen Sensor No. 1, Bank 2 Insufficient Switching (RPO OSG)
P1154  Heated Oxygen Sensor No. 1, Bank 2 Transition Time Ratio (Except RPO OSG)
P1154  Heated Oxygen Sensor No. 1, Bank 2 Insufficient Switching (RPO OSG)
P1172  Secondary Fuel Pump Insufficient/No Fuel Flow
P1220  Throttle Position Sensor No. 2 Circuit
P1221  Throttle Position Sensors No. 1 & 2 Correlation
P1258  Engine Coolant Over Temperature - Protection Mode Active
P1275  Accelerator Pedal Position Sensor No. 1 Circuit
P1276  Accelerator Pedal Position Sensor No. 1 Performance
P1280  Accelerator Pedal Position Sensor No. 2 Circuit
P1281  Accelerator Pedal Position Sensor No. 2 Performance
P1285  Accelerator Pedal Position Sensor No. 3 Circuit
P1286  Accelerator Pedal Position Sensor No. 3 Performance
P1336  Crankshaft Position System Variation Not Learned
P1380  Misfire Detected - Rough Road Data Not Available
P1381  Misfire Detected - No Communications With Brake Control Module
P1404  EGR Closed Position Performance
EGR Valve Pintle Stuck Open
P1415  Secondary Air Injection System - Bank 1
P1416  Secondary Air Injection System - Bank 2
P1431  Fuel Level Sensor No. 2 Performance
P1432  Fuel Level Sensor No. 2 - Low Voltage
P1433  Fuel Level Sensor No. 2 - High Voltage
P1441  Evaporative Emission System Flow During Non-Purge
P1514  Throttle Body Performance
P1515  Control Module Throttle Actuator Position Performance
P1516  Throttle Actuator Control Module Throttle Actuator Position Performance
P1517  Throttle Actuator Control Module Performance
P1518  Throttle Actuator Control Module Serial Data Circuit
P1571  Traction Control Torque Request Circuit
P1626  Theft Deterrent System Fuel Enable Signal Lost
P1631  Theft Deterrent Start Enable Signal Not Correct
P1635  5-Volt Reference No. 1 Circuit
P1637  Generator "L" Terminal Circuit
P1638  Generator "F" Terminal Circuit
P1639  5-Volt Reference No. 2 Circuit