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Home >> Jeep >> 2017 >> Wrangler Sahara, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 107 (2.4L - DTCS P0633 To P1457) >> DTC Troubleshooting >> P1400-Aftermarket Calibration Detected/Warranty Coverage Confirmation Required >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2017 Jeep Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
POSSIBLE CAUSES
PCM HAS BEEN PROGRAMMED WITH UNAUTHORIZED OR AFTERMARKET SOFTWARE
AN AUTHORIZED MOPAR OR SCAT PAK POWERTRAIN CONTROL MODULE (PCM) HAS BEEN INSTALLED

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to  PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE  . 

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