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Home >> Jeep >> 2018 >> Wrangler Unlimited Moab >> Repair and Diagnosis >> Transmission >> Transmission Control Systems >> Transmission Control Module (TCM) - DTCS P1D91-00 To U1477-00 >> DTC Troubleshooting >> P1DB6-00-Vehicle Speed Signal Performance >> Possible Causes

Possible Causes

Possible Causes
ANTI LOCK BRAKE SYSTEM (ABS) DTCS ARE SET
POWERTRAIN CONTROL MODULE (PCM) DTCS ARE SET
OUTPUT SPEED SENSOR IMPROPERLY INSTALLED
TRANSMISSION CONTROL MODULE (TCM)

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to  PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE  .

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