CID 0274 FMI 04 Atmospheric Pressure short to ground
Conditions Which Generate This Code:
The Electronic Control Module (ECM) detects the following conditions:
- Atmospheric pressure signal voltage is below 1.7 VDC for one second.
- The ECM has been powered for at least three seconds.
System Response:
The ECM will log the diagnostic code. The ECM flags atmospheric pressure as invalid data and a default value of 45 kPa (6.5 psi) is used.
- Low power
Test Step 1. Perform the following diagnostic procedure: Engine Pressure Sensor Open or Short Circuit - Test
Results:
- OK - STOP
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