U0612Lost Communication With Intake Air Temperature Sensor 1 Bank 2
- Generic OBD-II code · Network
- Turns on the check-engine light
- Matters for the ITP
- How the car detects it
- Bank 2 needs its own intake temperature sensor only where the engine has two separate air paths, as on V engines with one air box and throttle per bank. U0612 is the lost-communication code for that sensor 1 of bank 2. GM's 23OBDG07/24OBDG07 treat it as the bank 2 twin of U0611: the second bank's temperature message is missing, or its line is reported stuck high or low, and the MIL follows after two trips. Ford's 2024 gasoline summary, however, assigns U0612 to communication with its digital air flow sensor B (lost for more than 5 s), so on Ford vehicles the code points to that meter instead. P00AA to P00AE cover the analog circuit. Without the value the controller substitutes a fixed temperature.
- What you may notice
- Check engine light
- Little effect on driving; with Ford's air flow sensor B reduced response possible
- Likely causes
- LikelyWiring fault on the bank 2 intake sensor branch
- PossibleBank 2 temperature sensor or its host sensor failed (on Ford the air flow sensor B)
- RareCorroded connector on the bank 2 intake
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Easy · Often possible to do yourself.Typical cost: €30 – €350
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.