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Home >> Jeep >> 2011 >> Compass Limited, AWD, Standard >> Repair and Diagnosis >> Engine Performance >> System >> 2.0L & 2.4L - DTCS P2116 To U1418 >> Diagnosis And Testing >> U0121-Lost Communication With Anti-Lock Brake Module >> When Monitored:

When Monitored:

Ignition run time is greater than one second. Battery voltage between 9 and 16 volts. Engine run time greater than three seconds.