P1312 Buick Ignition Coil.2
Possible causes
– Faulty Exhaust Temperature Sensor
– Exhaust Temperature Sensor harness is open or shorted
– Exhaust Temperature Sensor circuit poor electrical connection
– Exhaust Temperature Sensor harness is open or shorted
– Exhaust Temperature Sensor circuit poor electrical connection
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
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