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Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1575 (6.7L Diesel - DTCS P24A2 To U3017 - 2500 Hd) >> DTC Troubleshooting >> U1421-Implausible Ignition Key Off Time Received >> When Monitored

When Monitored

WARNING: This page is about a different car, the 2017 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.

This diagnostic runs once with the ignition on provided there is a minimum 10°C (18°F) coolant temperature drop between previous ignition off and next key on; and power-down coolant temperature is greater than or equal to 76.6°C (169.88°F).