2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1790
P0030, P0036, P0050, or P0056
* The ignition 1 voltage is between 11-18 volts.
* The engine speed is greater than 400 RPM.
* The DTCs run continuously when the above conditions are met for 1 second.
P0053, P0054, P0059, or P0060
* DTCs P0112, P0113, P0117, P0118, or P2610 are not set.
* The engine run time is greater than 3 seconds.
* The ignition voltage is less than 18 volts.
* The ignition is OFF for greater than 8 hours.
* The engine coolant temperature (ECT) is between -30 to +45掳C (-22 to +113掳F) at engine start-up.
* The ECT and the intake air temperature (IAT) are within 8掳C (14掳F) at engine start-up.
* The DTCs run once per drive cycle when the above conditions are met.
P0135, P0141, P0155, or P0161
* DTCs P0116, P0117, P0118, P0125, or P0128 are not set.
* The ignition 1 voltage is between 10-18 volts.
* The HO2S is at operating temperature.
* The HO2S is commanded ON.
* The DTCs run once per drive cycle when the above conditions are met for 120 seconds.
Conditions for Setting the DTC
P0030, P0036, P0050, or P0056
The ECM detects that the commanded state of the driver and the actual state of the control circuit do not match for greater than 5 seconds.
P0053, P0054, P0059, or P0060
The ECM detects the HO2S heater is not within a specified resistance range at engine start-up for greater than 1 second.
P0135 or P0155
The ECM detects that the HO2S 1 heater current is greater than 3.1 amps, or less than 0.3 amps for greater than 8 seconds.
P0141 or P0161
The ECM detects that the HO2S 2 heater current is greater than 2.9 amps, or less than 0.3 amps for greater than 8 seconds.
Action Taken When the DTC Sets
DTCs P0030, P0036, P0050, P0053, P0054, P0056, P0059, P0060, P0135, P0141. P0155, and P0161 are Type B DTCs.
Conditions for Clearing the MIL/DTC
DTCs P0030, P0036, P0050, P0053, P0054, P0056, P0059, P0060, P0135, P0141. P0155, and P0161 are Type B DTCs.
Reference Information
Schematic Reference
Engine Controls Schematics (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
* Heated Oxygen Sensor Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical
Diagnostic Procedures/Wiring Repairs/Heated Oxygen Sensor Wiring Repairs)
