This event code will only be generated if the switch for the air filter restriction is installed and the customer programmable feature is enabled.
The Electronic Control Module (ECM) detects a fault with the air flow. If the air flow has been restricted for more than thirty seconds, the ECM will generate this code.
Note: This code is generated only when the engine is running. This event code will become inactive when the restriction decreases for more than 5 seconds.
System Response:
The event code will be logged.
The warning light on the control panel will flash.
Possible Performance Effect:
E172-1
A blocked filter may cause the engine to experience symptoms such as low power.
Troubleshooting:
Test Step 1.
The event code may represent a fault with the electronic system. This event code normally indicates high air filter restriction. Refer to Testing and Adjusting , "Air Inlet and Exhaust System - Inspect".
Results:
- OK - STOP