DTC U2121-49: Communication Error With Vehicle Control Module
U2121:49 (BCM) DETECTION CONDITION AND POSSIBLE CAUSE
| System malfunction location | Communication error with vehicle control module (VCM) | |
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| Detection condition |
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| Fail-safe |
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| Vehicle status when DTCs are output | Not applicable | |
| Repeatability verification procedure | 1. Clear the DTC recorded in the memory. (See CLEARING DTC .) | |
| Inspection/action procedure | Proceed with the inspection/action in the order from Step 1 below. After part repair or replacement, perform the repeatability verification procedure and perform a DTC inspection. (See DTC INSPECTION .) - If the DTC inspection indicates the same DTC again, go to the next step. 1. Replace the body control module (BCM).
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| Purpose/reason (possible cause) | Body control module (BCM) malfunction (no other possible malfunction considered) | |
| Referred to workshop manual item | BODY CONTROL MODULE (BCM) REMOVAL/INSTALLATION | |
| System wiring diagram |
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| Function explanation (DTC detection outline) | Not applicable | |