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P0651 Diagnostic Trouble Code Discussion for September 2024

5-Volt Reference 2 Circuit Malfunction


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Trouble Ticket Help Requests for DTC P0651
Help Request Posted
2010 Chevrolet Malibu LT 2.4L No Start, MIL Lamp on VIN: 1G1ZC5EB9A
P0651: 5v reference 2 or B circuit open. Hello community. I think the ECU is bad on this one but want to make sure I'm not missing anything. Here's the history. Car arrived as a no crank, no start. Owner did self-repair. He changed the starter, ECU, passkey with used parts. Reinstalled the OEM EC...
September 09, 2024