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P2231 Diagnostic Trouble Code Discussion for March 2015

Heated Oxygen Sensor (Bank 1 Sensor 1) Signal Shorted To Heater Circuit

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Trouble Ticket Help Requests for DTC P2231
Help Request Posted
2006 Cadillac CTS 2.8L MIL Lamp on VIN: 1G6DM57T46
P2231: Heated Oxygen Sensor (Bank 1 Sensor 1) Signal Circuit Shorted to Heater Circuit. ... heated o2 sensors things were good, engine code p420 was gone & oxygen readings were good, next day customer comes back with 2 codes p2234-p2231, checked my scanner verified vehicle is running on open loop only, when cold its open then closes then at 1...
March 13, 2015