P0071 INLET AIR TEMPERATURE SENSOR RATIONALITY (DIESEL)
When Monitored and Set Condition:
When Monitored: While the engine is running.
Set Condition: The ECM does not read a change in value from the sensor over time.
POSSIBLE CAUSES
- INLET AIR TEMPERATURE SENSOR
- INTERMITTENT CONDITION
DIAGNOSTIC PROCEDURE
NOTE:Refer to VERIFICATION TESTS for appropriate verification test procedures.
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Remove the temperature sensor and reconnect the wiring to the sensor. With the DRBIII® in Sensors, Monitor the inlet Air Temperature. While heating the sensor with an external heat source (DO NOT USE OPEN FLAME). Does the reading from the sensor increase at least 5 degrees F. on the DRBIII®?
Yes --> Refer to the SYMPTOM: INTERMITTENT CONDITION Symptom (Diagnostic Procedure). Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL).
No --> Replace the inlet air temperature sensor Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL).