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Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 603 (3.0L Diesel - DTCS P2455-00 To U1489-00 - 1500) >> Diagnosis And Testing >> U1121-00-Lost Communication With Lin Ecu 1 >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2014 RAM 1500. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes
LIN 1 BUS CIRCUIT SHORTED TO GROUND
LIN 1 BUS CIRCUIT SHORTED TO VOLTAGE
LIN 1 BUS CIRCUIT OPEN/HIGH RESISTANCE
GLOW PLUG MODULE
ALTERNATOR
POWERTRAIN CONTROL MODULE (PCM)