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 MANUALSJEEP2011COMPASS LATITUDE, 2.4 B, AWD, AUTOMATIC CVT, CVT3REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 72 (2.0L & 2.4L - DTCS P2100 TO U1418 - MK)DTC TROUBLESHOOTINGU0121 - LOST COMMUNICATION WITH ANTI-LOCK BRAKE MODULESET CONDITION
2011 Jeep Compass Latitude, 2.4 B, AWD, Automatic CVT, CVT3
Set Condition
2011 Jeep Compass Latitude, 2.4 B, AWD, Automatic CVT, CVT3SECTION Set Condition
WARNING: This page is about a different car, the 2017 Jeep Patriot and 2017 Jeep Compass. However, it is still accessible from the selected car via links, so may be relevant.
The Powertrain Control Module (PCM) doesn't receive an ABS message over the CAN C circuit for seven consecutive seconds. The circuit is continuously monitored.
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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.