E539 High Intake Manifold Air Temperature
Conditions Which Generate This Code:
The Electronic Control Module (ECM) detects a fault with the intake manifold air temperature. The ECM detects the following faults:
- The engine has been running for more than 3 minutes.
- The trip point for the event code for intake manifold air temperature is reached.
- Diagnostic code 172-3 Intake Manifold Air Temperature open/short to +batt is not active.
- Diagnostic code 172-4 Intake Manifold Air Temperature short to ground is not active.
Show/hide table
| Trip Points for the Intake Manifold Air Temperature |
||
| E539-1 | E539-2 | |
| Engine Model | ||
| Turbocharged Aftercooled Engines (TA) | 82 °C (179 °F) |
86 °C (186 °F) |
System Response:
The warning lamp will be illuminated. If equipped, the diagnostic lamp will flash the event code.
The event code will be logged.
E539-1
None
E539-2
The engine will be derated.
Test Step 1.
Refer to Troubleshooting, "Intake Air Temperature Is Too High".
Results:
- OK - STOP
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