4 LO + traction control dash light flashing OBD code recovered - P1497 - Powertrain

[Damo1502010 Lurker Find all posts View Profile Close Damo1502010]

Hi Guys,

2012 Diesel auto 150 Prado (360,000kms) Full story - I completed a camshaft reseal and water pump replacement and pressure washed some of the grime out from under the bonnet. Test drove the car with no problems. Trouble has started since I replaced the original battery terminals. Dash 4 LO and traction control lights are flashing. Check OBD and active code P1497; I tried to clear it with no luck (worth a shot, it being a battery-related issue). 4 LO has not been engaged , nor traction control switched off, Car will not go into overdrive and warning lights stay on. I started checking plugs for water ingress, but nothing was found troubling as yet.

Any suggestions would be great.

[ptommo59 Senior Member Find all posts View Profile Close ptommo59]

Did you get that issue sorted as code actually related to the Intake Air Temp Sensor 1 (Turbo side of the intercooler) being high (which means it is open circuit).

P1497 - Intake Air Temperature Sensor 1 Circuit High

Open in the intake air temperature sensor (turbo) circuit for 0.5 seconds (1 trip detection logic).

• Open in intake air temperature sensor (turbo) circuit
• Intake air temperature sensor (turbo)
• ECM

Sensor P/No should be 89424-60010 if its not a wiring/connector issue.

[starbuck76 Senior Member Find all posts View Profile Close starbuck76]

I had the same symptoms occurring on odd occasions with a LC 200 series. Turned out to be a 'battery on it's way out' problem. In my case changing the battery fixed it. As you have changed the battery terminals, maybe look there?