DTC U0121 - Lost Communication With Anti-Lock Brake System (Abs) Control Module
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U0121 - LOST COMMUNICATION WITH ANTI-LOCK BRAKE SYSTEM (ABS) CONTROL MODULE
| Description: | This DTC sets when the PCM does not receive the ABS message within the defined amount of time. | ||
| Possible Causes: |
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| Diagnostic Aids: | Network DTC concerns occur during module to module communication. Refer to the appropriate Module Communications Network article, Communication Network DTC Chart to continue diagnosis. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to PINPOINT TEST AE . | ||