P00EA
DTC P00EA or P00EB
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis Strategy Based Diagnosis for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions Diagnostic Procedure Instructions provide an overview of each diagnostic category.
DTC Descriptors
DTC P00EA
- Intake Air Temperature (IAT) Sensor 3 Circuit Low Voltage
DTC P00EB
- Intake Air Temperature (IAT) Sensor 3 Circuit High Voltage
Diagnostic Fault Information
Typical Scan Tool Data
Circuit/System Description
The intake air temperature (IAT) sensor 3 is a variable resistor that measures the temperature of the air going to the inlet of the charge air cooler (CAC). The engine control module (ECM) supplies 5 V to the IAT sensor 3 signal circuit, and a ground for the IAT sensor 3 low reference circuit. The ECM continuously monitors the IAT sensor 3 signal for an excessively high or low voltage, or for a start-up temperature signal that is not in correlation with the CAC Temperature Sensor start-up signal.
Conditions for Running the DTCs
* The engine is running for more than 10 s.
* The battery voltage is more than 11 V.
* DTC P00EA and P00EB run continuously when the above enabling conditions are met.
Conditions for Setting the DTC
Note: The scan tool display range is between -40 and +215°C (-40 and +419°F).
P00EA
The IAT sensor 3 is warmer than 250°C (482°F) for longer than 5 s. This is equal to or less than 0.03V on the IAT sensor 3 signal circuit as measured by the engine control module.
P00EB
The IAT sensor 3 is colder than -53°C (-63°F) for longer than 5 s. This is equal to or greater than 4.8V on the IAT sensor 3 signal circuit as measured by the engine control module.
Action Taken When the DTC Sets
DTCs P00EA and P00EB are Type B DTCs.
Conditions for Clearing the DTC
DTCs P00EA and P00EB are Type B DTCs.
Diagnostic Aids
* The IAT sensor 3 is located before the inlet to the CAC. The IAT sensor 3 is also known as the CAC Inlet Temperature Sensor (Turbocharger).
* The CAC Temperature Sensor is located after the outlet from the CAC. The CAC Temperature Sensor is also known as the CAC Outlet Temperature Sensor (Charge Air Outlet Duct).
* Skewed temperature sensors may cause this DTC to set.
* An inaccurate IAT sensor 2 and/or 3 may cause P0101 to set. Verify the sensor's operation by varying the air temperature while observing the scan tool parameter and comparing the readings with a thermometer.
* High resistance on either the IAT sensor 3 signal circuit or the IAT sensor 3 low reference circuit could set these DTCs.
Reference Information
Schematic Reference
Engine Controls Schematics [1][2]Electrical Diagrams
Connector End View Reference
Component Connector End Views 1-2 Shift Solenoid (SS) Valve (M30)
Electrical Information Reference
* Circuit Testing Circuit Testing
* Connector Repairs Connector Repairs
* Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections
* Wiring Repairs Wiring Repairs
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Scan Tool Reference
Control Module References Control Module References for scan tool information
Circuit/System Verification
Note:
* To minimize the effects of residual engine heat and sensor internal heating elements, perform Steps 1 and 2 of this verification procedure only if the ignition has been OFF for 8 hours or more.
* The vehicle sitting in direct sun light or having the block heater ON will skew the results.
1. Ignition ON.
2. Verify the following scan tool parameters are within 35°C (63°F) of each other.
* CAC temperature sensor
* IAT Sensor 3 sensor
• If not within 35°C (63°F)
Refer to Circuit System Testing.
• If within 35°C (63°F)
3. Engine idling.
4. Verify the scan tool IAT Sensor 3 sensor parameter is between -39 to +213°C (-38 to +415°F)
• If not between -39 to +213°C (-38 to +415°F)
Refer to Circuit System Testing.
• If between -39 to +213°C (-38 to +415°F)
5. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
6. Verify a DTC does not set.
• If a DTC sets
Refer to Circuit/System Testing.
• If a DTC does not set
7. All OK.
Circuit/System Testing
Note:
* You must perform the Circuit/System Verification before proceeding with the Circuit/System Testing.
* You must perform the Diagnostic Repair Verification after completing the Circuit/System Testing.
1. Ignition OFF, disconnect the harness connector at the Intake Air Temperature sensor 3.
2. Ignition OFF and all vehicle systems OFF. It may take up to 2 minutes for all vehicle systems to power down. Test for less than 2 ohms between the low reference circuit terminal 2 and ground.
• If 2 ohms or greater
1. Ignition OFF, disconnect the X3 harness connector at the K20 Engine Control Module.
2. Test for less than 2 ohms in the low reference circuit end to end.
• If 2 ohms or greater, repair the open or high resistance in the circuit.
• If less than 2 ohms replace the K20 Engine Control Module.
3. Test for 4.8-5.2 V between the signal circuit terminal 1 and ground.
• If less than 4.8 V
1. Ignition OFF, disconnect the X3 harness connector at the K20 Engine Control Module.
2. Test for infinite resistance between the signal circuit and ground.
• If less than infinite resistance, repair the short to ground on the circuit.
• If infinite resistance
3. Test for less than 2 ohms in the signal circuit end to end.
• If 2 ohms or greater, repair the open/high resistance in the circuit.
• If less than 2 ohms, replace the K20 Engine Control Module.
• If greater than 5.2 V
Note: If the signal circuit is shorted to a voltage the engine control module or the sensor may be damaged.
1. Ignition OFF, disconnect the X3 harness connector at the K20 Engine Control Module, ignition ON.
2. Test for less than 1 V between the signal circuit and ground.
• If 1 V or greater, repair the short to voltage on the circuit.
• If less than 1 V, replace the K20 Engine Control Module.
• If between 4.8-5.2 V
4. Test or replace the Intake Air Temperature sensor 3.
Component Testing
* Test the Intake Air Temperature sensor 3 by varying the sensor temperature while monitoring the air temperature with a thermometer. Compare the readings with the scan tool IAT Sensor 3 parameter. The values should be within 5%.
• If not within the specified range, replace the Intake Air Temperature sensor 3.
Repair Instructions
Perform the Diagnostic Repair Verification Verification Tests after completing the diagnostic procedure.
* Charge Air Temperature Sensor Replacement (Turbocharger) Charge Air Temperature Sensor Replacement (Turbocharger)Charge Air Temperature Sensor Replacement (Outlet Pipe) Charge Air Temperature Sensor Replacement (Outlet Pipe) (Turbocharger) for Intake Air Temperature sensor 3 replacement
* Charge Air Temperature Sensor Replacement (Turbocharger) Charge Air Temperature Sensor Replacement (Turbocharger)Charge Air Temperature Sensor Replacement (Outlet Pipe) Charge Air Temperature Sensor Replacement (Outlet Pipe) (Charge Air Outlet Duct) for Charge Air Cooler sensor replacement
* Perform the scan tool Diesel Particulate Filter (DPF) Regeneration Enable Diesel Particulate Filter (DPF) Regeneration Enable procedure if the scan tool DPF Soot Mass is less than 30 g. If the scan tool DPF Soot Mass is greater than 30 g, perform the Diesel Particulate Filter (DPF) Service Regeneration Diesel Particulate Filter (DPF) Service Regeneration.
* Control Module References Control Module References for Engine Control Module replacement, programming, and setup