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