P0031 Diagnostic Trouble Code Discussion for June 2020
Air Fuel Sensor (Bank 1 Sensor 1) Heater Control Circuit Low Voltage
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| Help Request | Posted | |
| 2012 Toyota Tundra 5.7L MIL Lamp on VIN: 5TFEY5F12C P0031: A/F Sensor Heater Control Circuit Low B1S1. Just spitballing here with some info. I'm not completely ready to call a bad pcm eventhough i'm pretty sure that's what it is. What scares me is the 10 v on the heater ground with sensor disconnected. i checked frequency of the circuit and got 0 hz. my tho... |
June 13, 2020 |
