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Home >> Jeep >> 2007 >> Commander Base, 4.7 P, AWD >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> DTCS U1411 To U1418, System Checks, Engine Cranks But No Start, Symptom Tests >> U1412-Implausible Vehicle Speed Signal Received >> Possible Causes

Possible Causes

Possible Causes 
CAN C BUS CIRCUIT SHORTED
CAN C BUS CIRCUIT OPEN
ABS MODULE
POWERTRAIN CONTROL MODULE (PCM)

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

The ABS Module sends vehicle speed information over the CAN C Bus circuit to the PCM.

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