Subaru Crosstrek Service Manual: Dtc p0073 ambient air temperature sensor circuit "a" high
ENGINE (DIAGNOSTICS)(H4DO) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P0073 AMBIENT AIR TEMPERATURE SENSOR CIRCUIT "A" HIGH
NOTE:
For the diagnostic procedure, refer to DTC P0072. Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC P0072 AMBIENT AIR TEMPERATURE SENSOR CIRCUIT "A" LOW">
1. OUTLINE OF DIAGNOSIS
Detect the open or short circuit of ambient temperature sensor.
Judge as NG if out of specification.
2. COMPONENT DESCRIPTION
Ambient temperature sensor is connected to combination meter. ECM receives the data of ambient temperature sensor via CAN communication with combination meter.
(1) | Ambient sensor | (2) | Resistance value (k?) | (3) | Ambient air temperature (°C (°F)) |
3. EXECUTION CONDITION
Secondary Parameters | Execution condition |
Battery voltage | ≥ 10.9 V |
4. GENERAL DRIVING CYCLE
Always perform the diagnosis continuously.
5. DIAGNOSTIC METHOD
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.
Malfunction Criteria | Threshold Value |
Output voltage | > 4.88 V |
Time Needed for Diagnosis: 2500 ms
Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
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