DTC after replacing thermostat housing

[AJRGC]

I've had some cooling issues with my 2014 GC - ODB reported itwas running at 115c.. I took it to the mechanic who diagnosed that I had a crack in the thermostat housing. It looked quite bad, the inside of the engine bay was painted with coolant..

The part was replaced, coolant drained, flushed and replaced - and now the car is sitting nicely at 85-90c.

I plugged in my ODB after taking it for a run and noticed I have two codes now;

P0113 OBD-II Trouble Code: IAT Sensor Circuit High Input Problem
U1467 Implausible Driver Shift Request Signal Received On CAN. I tried to clear them with my Veepak ODB monitor, but they return straight away.

Any idea why these would appear? The battery is the car is new as of November - and i recently had the radiator/fan assembly etc.. replaced due to an accident.

Could something be shorting? Any advise on what to look for - im planning to take the car back in the next couple of days.

Thanks!
Andrew

[Jonny Jeep]

Have a look for the IAT sensor, in the air intake tube between the air filter and throttle body. Make sure the connector is securely seated. I don't know if it's something that would be disturbed when replacing the thermostat housing but from the code I suspect it's disconnected.

The second code I have no idea about. Maybe try cleaning up battery terminals and engine and body ground connections up in case there is something funky going on electrically.

[AJRGC]

Thanks for the response. Interestingly the codes were gone this morning. I was told by another group that they should disappear after a few restarts... odd.

Thanks!

[Nanook]

Originally Posted by AJRGC

Thanks for the response. Interestingly the codes were gone this morning. I was told by another group that they should disappear after a few restarts... odd.

Thanks!

That's true. If the fault isn't reoccurring, it can still take up to 20 start cycles for the codes to clear themselves.