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Home >> Jeep >> 2022 >> Gladiator Mojave, Part Time T/Case Control, Standard Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 30 (3.0L Diesel - DTCS P2266-00 To P2457-00) >> DTC Troubleshooting >> P2457-00-Exhaust Gas RECIRCULATION Cooling System Performance >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different variant/trim than selected.
  1. READ AND RECORD DTCS AND ENVIRONMENTAL DATA - ERASE DTCS AND CHECK FOR THE DTC TO RETURN 
    1. With the scan tool, read DTCs in all Electronic Control Units (ECUs) and record on the repair order.
    2. For future reference, run and save a vehicle Scan Report and all related recorded data.
    3. With the scan tool, erase all DTCs.
    4. Turn the ignition off for a minimum of 75.0 seconds.
    5. Turn the ignition on.
    6. Using the When Monitored and Set Conditions above and recorded data, operate the vehicle in the conditions that set the DTC.
    7. With the scan tool, read DTCs.

      Did the DTC return?

      Yes 

      • Go To  2

      No 

      • Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT DTC .
  2. CHECK FOR OTHER DTCS 
    1. Ignition on, engine not running.
    2. With the scan tool, read DTCs.

      Are there any other 5-Volt Reference, EGR Temperature Sensor, Coolant Temperature, Fuel System or EGR Valve DTCs?

      Yes 

      No 

      • Go To  3
  3. CLEAN THE EGR COOLER AND RETEST FOR DTC 
    1. Remove and clean the EGR Cooler with approved Mopar EGR system cleaner.
    2. Reinstall the EGR Cooler.
    3. With the scan tool, erase DTCs.
    4. Turn the ignition off for 75 seconds.
    5. Start the engine. It may be necessary to test drive the vehicle.
    6. With the scan tool, read DTCs.

      Did the DTC return?

      Yes 

      No