2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2433
* Engine airflow
* Engine coolant temperature
* Engine runtime
* Park/neutral position
* Vehicle speed
The actual model is then compared to the expected exhaust energy model.
Conditions for Running the DTC
* The engine is running, and a cold start has been detected.
* Vehicle speed is less than 2 km/h (1 mph).
* The engine is at idle with no input from the accelerator pedal.
* DTCs P0068, P0101, P0102, P0103, P0106, P0107, P0108, P0112, P0113, P0116, P0117, P0118, P0120, P0121, P0122, P0123, P0220,
P0222, P0223, P0201, P0202, P0203, P0204, P0205, P0206, P0300, P0335, P0336, P0351, P0352, P0353, P0501, P0502, P0506, P0507,
P0601, P0602, P0603, P0604, P0606, P0607, P060D, P062F, P0641, P0651, P1101, P1516, P1682, P2101, P2119, P2120, P2122, P2123,
P2125, P2127, P2128, P2135, P2138, P2176, P2610 are not set.
This DTC runs for 15 seconds within the first 2 minutes of start-up. This diagnostic runs once per trip when a cold start has been determined.
Conditions for Setting the DTC
The actual exhaust energy model does not match the expected exhaust energy model.
Action Taken When the DTC Sets
DTC P1400 is a Type A DTC.
Conditions for Clearing the MIL/DTC
DTC P1400 is a Type A DTC.
Reference Information
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
Description and Operation
Engine Control Module Description (See: Powertrain Management/Computers and Control Systems/Description and Operation/Engine Control
Module Description)
Diagnostic Aids
Any loading of the engine that lowers engine RPM, such as with partial application of the clutch, A/C cycling etc., during the first 120 seconds of
engine runtime may set this DTC.
Circuit/System Verification
1. Allow the engine to cool.
2. Start and idle the engine for at least 2 minutes.
3. DTC P1400 should run and pass.
Circuit/System Testing
* Inspect the air intake system for the following:
- Damage, restriction, or modification
- Dirty or deteriorating air filter element
- Crankcase ventilation system for correct operation-Refer to Crankcase Ventilation System Inspection/Diagnosis (See: Powertrain
Management/Emission Control Systems/Positive Crankcase Ventilation/Testing and Inspection).
- Water intrusion
- Vacuum leak and other un-metered air downstream of the mass air flow (MAF) sensor
- Intake manifold leak
* Inspect the exhaust system for the following:
