Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSJEEP2009COMPASS LIMITED, ED3, AWD, AUTOMATIC CVTREPAIR AND DIAGNOSISTRANSMISSIONAUTOMATIC TRANS(TRANSMISSION CONTROL MODULE (TCM) - ELECTRICAL DIAGNOSTICS)DTC TROUBLESHOOTINGU1401-IMPLAUSIBLE ENGINE SPEED SIGNAL RECEIVEDSET CONDITIONS
2009 Jeep Compass Limited, ED3, AWD, Automatic CVT
Set Conditions
2009 Jeep Compass Limited, ED3, AWD, Automatic CVTSECTION Set Conditions
- Set Condition:
- Condition one:
All the below conditions must be present for the period of 5 seconds for the DTC to set:
- Engine speed minus Input speed is greater than 1000 RPM for the period of 5 seconds.
- Engine speed minus Secondary speed estimated ratio is greater than 1000 RPM for the period of 5 seconds.
- Secondary speed multiplied by the estimated ratio minus the primary speed is less than 1000 RPM.
- Condition two:
- Engine speed is less than 450 RPM and the Input speed is greater than or equal to 1000 RPM for the period of 20 msec.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.