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Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1659 (5.7L CNG - DTCS P1457 To P2181 - 2500 Hd) >> DTC Troubleshooting >> P1657-Alternative Fuel Rail/System Temperature - Too High >> Set Condition

Set Condition

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.

The CNG Rail Temperature Sensor input to the Powertrain Control Module (PCM) is above 140°C (284°F) for 30.0 seconds.

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