2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 1942
The vehicle speed is greater than 10 km/h (6 mph).
Conditions for Setting the DTC
The TCM OSS signal and the average ABS wheel speed sensor and the drive motor signals differ by greater than 10 km/h (6 mph) for greater than
10 seconds.
Action Taken When the DTC Sets
* P215C is a Type B DTC.
* The TCM calculates output speed based on the ABS wheel speed and the drive motor speed signals.
* The TCM calculates vehicle speed based on the wheel speed sensors.
Conditions for Clearing the DTC
P215C is a Type B DTC.
Diagnostic Aids
* Vehicles equipped with a transfer case may set this DTC if the vehicle is moving while the transfer case is in the Neutral selection. Review
the freeze frame records with a scan tool to identify if this DTC was set by the vehicle operator. Explain proper transfer case shifting
procedures as necessary.
* Inspect the OSS, harness, and connector pins for metallic debris and the hybrid direct, 2-3-4 clutch housing assembly machined teeth for
damage or misalignment. Even one bent or misaligned tooth, and or contact with the OSS, may cause this DTC to set. Proper torque of 9-13
Nm (80-115 lb in) to the OSS mounting bolt is critical to proper OSS operation. The hybrid system is very sensitive to the OSS signal for
overall operation.
Reference Information
Schematic Reference
Automatic Transmission Controls Schematics (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Diagrams)
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)
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information.
Special Tools
J 38522 Variable Signal Generator
Circuit/System Verification
Operate the vehicle at 16-32 km/h (10-20 mph) while observing the Transmission OSS and ABS wheel parameters on the scan tool. Inspect for the
following mechanical conditions:
* Loose, misaligned, OSS
* Broken driveline components
The OSS and ABS wheel speed signal displays should not vary by greater than 10 km/h (6 mph).
Circuit/System Testing
Important: For vehicles equipped with a transfer case, review Diagnostic Aids.
