2010 Cadillac Truck Escalade RWD V8-6.2L Page 1647

2010 Cadillac Truck Escalade RWD V8-6.2L Page 1647

* Water intrusion in the B52 HO2S harness connector

* Low or high fuel system pressure-Refer to Fuel System Diagnosis (w/o FPCM) (See: Powertrain Management/Computers and Control

Systems/Testing and Inspection/Component Tests and General Diagnostics)Fuel System Diagnosis (FPCM) (See: Powertrain

Management/Computers and Control Systems/Testing and Inspection/Component Tests and General Diagnostics)

* Fuel that is contaminated-Refer to Alcohol/Contaminants-in-Fuel Diagnosis (Without Special Tool) (See: Powertrain

Management/Computers and Control Systems/Testing and Inspection/Component Tests and General

Diagnostics/Alcohol/Contaminants-in-Fuel Diagnosis (Without Special Tool))Alcohol/Contaminants-in-Fuel Diagnosis (Special Tool) (

See: Powertrain Management/Fuel Delivery and Air Induction/Fuel/Testing and Inspection/Alcohol/Contaminants-in-Fuel Diagnosis

(Special Tool))

* Fuel saturation of the evaporative emission (EVAP) canister

* Exhaust leaks near the B52 HO2S

* Engine vacuum leaks

* Engine oil consumption-Refer to Oil Consumption Diagnosis (See: Engine, Cooling and Exhaust/Engine/Testing and

Inspection/Component Tests and General Diagnostics/Oil Consumption Diagnosis)

* Engine coolant consumption-Refer to Loss of Coolant (See: Engine, Cooling and Exhaust/Cooling System/Testing and

Inspection/Symptom Related Diagnostic Procedures/Loss of Coolant)

瀚慖f you find any of the above conditions, repair as necessary.

2. If all conditions test normal, test or replace the appropriate B52 HO2S.

Repair Instructions

Caution: Refer to Heated Oxygen Sensor Resistance Learn Reset Caution (See: Powertrain Management/Computers and Control

Systems/Oxygen Sensor/Service Precautions/Heated Oxygen Sensor Resistance Learn Reset Caution).

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* Heated Oxygen Sensor Replacement - Bank 1 Sensor 1 (1500 Series) (See: Powertrain Management/Computers and Control

Systems/Oxygen Sensor/Service and Repair)Heated Oxygen Sensor Replacement - Bank 1 Sensor 1 (2500 Series) (See: Powertrain

Management/Computers and Control Systems/Oxygen Sensor/Service and Repair)

* Heated Oxygen Sensor Replacement - Bank 1 Sensor 2 (1500 Series) (See: Powertrain Management/Computers and Control

Systems/Oxygen Sensor/Service and Repair)Heated Oxygen Sensor Replacement - Bank 1 Sensor 2 (2500 Series) (See: Powertrain

Management/Computers and Control Systems/Oxygen Sensor/Service and Repair)

* Heated Oxygen Sensor Replacement - Bank 2 Sensor 1 (1500 Series) (See: Powertrain Management/Computers and Control

Systems/Oxygen Sensor/Service and Repair)Heated Oxygen Sensor Replacement - Bank 2 Sensor 1 (2500 Series) (See: Powertrain

Management/Computers and Control Systems/Oxygen Sensor/Service and Repair)

* Heated Oxygen Sensor Replacement - Bank 2 Sensor 2 (1500 Series) (See: Powertrain Management/Computers and Control

Systems/Oxygen Sensor/Service and Repair)Heated Oxygen Sensor Replacement - Bank 2 Sensor 2 (2500 Series) (See: Powertrain

Management/Computers and Control Systems/Oxygen Sensor/Service and Repair)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for ECM replacement, setup, and programming

P014A

DTC P0133, P013A-P013F, P014A, P014B, P0153, P1133, or P1153

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptors

DTC P0133

- HO2S Slow Response Bank 1 Sensor 1

DTC P013A

- HO2S Slow Response Rich to Lean Bank 1 Sensor 2

DTC P013B

- HO2S Slow Response Lean to Rich Bank 1 Sensor 2

DTC P013C

- HO2S Slow Response Rich to Lean Bank 2 Sensor 2