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Home >> Dodge and Ram >> 2023 >> ProMaster 2500 >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> 3.6L - DTCS P2116 To P2457 >> DTC Troubleshooting >> P2166-Accelerator Pedal Position Sensor 1 Maximum Stop Performance >> Diagnostic Test

Diagnostic Test

  1. CHECK FOR AN ACTIVE DTC 
    NOTE:

    This DTC is set when the APPS values are learned in-plant but do not reach the minimum or maximum voltage range.

    1. Start the engine and allow it to reach normal operating temperature.
      WARNING:

      When the engine is operating, do not stand in direct line with the fan. Do not put your hands near the pulleys, belts or fan. Do not wear loose clothing. Failure to follow these instructions may result in possible serious or fatal injury.

    2. With the scan tool, read DTCs.

      Is the DTC active?

      Yes 

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      No 

  2. CHECK FOR OTHER DTCS 
    1. Refer to the recorded DTCs.

      Are there any APP Sensor or 5-volt supply voltage DTCs active or pending?

      Yes 

      No 

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  3. PERFORM THE ETC RELEARN FUNCTION TO DETERMINE PROPER OPERATION OF THE APP SENSOR 
    1. With a scan tool perform the ETC RELEARN function.
    2. With the scan tool, erase DTCs.
    3. Start the engine.
    4. With the scan tool, read DTCs.

      Is the DTC active?

      Yes 

      • Replace the Accelerator Pedal Position Sensor in accordance with the Service Information. After installation is complete, perform the ETC RELEARN function.
      • Perform the PCM VERIFICATION Test. Refer to POWERTRAIN VERIFICATION TEST .

      No 

      • Test. Complete.