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 Opera