B1277 MERCURY - Reverse Lamp Circuit Short
- Faulty Reverse Lamp
- Reverse Lamp harness is open or shorted
- Reverse Lamp circuit poor electrical connection
- Faulty Body Control Module (BCM)
Tech notesB1277:11 Reverse Lamp Circuit Short To Ground
B1277:15 Reverse Lamp Circuit Short To Battery or Open
- Engine Light ON (or Service Engine Soon Warning Light)
B1277 Mercury DescriptionThe Body Control Module (BCM) monitors the Reverse Lamp. The OBDII sets when the BCM detects an excessive current draw or open from the reverse lamp output circuit.
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