2007 Jeep Grand Cherokee U1411 U1403

U1411 U1403 Error Code Check Engine Light ON



u1403-Implausible Fuel Level Signal Received.

u1411-Implausible Fuel Volume Signal Received .

These two codes are for fuel-readings implausible but can be a cluster module problem so have a pro see if his scanner can find a problem on the cluster module.



U1403-IMPLAUSIBLE FUEL LEVEL SIGNAL The fuel level message that the PCM is receiving is implausible. 
The circuit is continuously monitored. 
Possible Causes CAN B OPEN OR SHORTED CLUSTER MODULE FRONT CONTROL MODULE PCM .
Theory of Operation The Front Control Module receives a fuel level signal over CAN B from the Cluster Module. Once the message is received from the FCM, it passages the fuel level message via CAN C to the 
PCM. 

U1411-IMPLAUSIBLE FUEL VOLUME SIGNAL RECEIVED The fuel volume message that the PCM is receiving is implausible. The circuit is continuously monitored. 
Possible Causes CAN B OPEN OR SHORTED CLUSTER MODULE FRONT CONTROL MODULE PCM Theory of Operation The Front Control Module receives a fuel volume signal over CAN B from the Cluster Module. 
Once the message is received from the FCM, it passages the fuel level message via CAN C to the PCM. pull fuse 11 in IPM (underhood fuse box) for 30 seconds to clear codes.

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