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Home >> Chrysler >> 2011 >> 300 Base, Gas >> Repair and Diagnosis >> External Pages >> Different car >> Section 100 (6.7L Diesel - DTCS - P21C4 To U1601 - 3500 Cab & Chassis) >> Diagnosis and Testing >> U040F-Invalid Data Received From REDUCTANT Control Module >> Testing >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2011 RAM Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
  1. OTHER DTCS 
    1. Ignition on, engine not running.
    2. With the scan tool, View DTCs.

      Is DTC U010E active?

      Yes 

      No 

      • Go To  2.
  2. U040F ACTIVE 

    Is DTC U040F active?

    Yes 

    • Go To  3.

    No 

  3. CHECK THE POWERTRAIN CONTROL MODULE 
    1. Turn the ignition off.
    2. Disconnect the DEF Dosing Control Unit harness connector.
      NOTE:

      Check connectors - Clean/repair as necessary.

    3. Ignition on, engine not running.
    4. With the scan tool, View DTCs.

      Is the DTC U010E active?

      Yes 

      No