Any idea of what needs to be checked/ replaced for codes P0113 and P0118 (Intake Air Temperature Circuit High Input / Engine Coolant Temperature Circuit High Input)?

well usually if the ecu tmep sensor is throwing a code, its bad (no gray in that area). I would replace that and see how the other reacts. It can be a cause and effect thing, not sure.

 

nipper

How's it running? Might reset the codes and see if they come back. I think sometimes codes pop in response to transient conditions.

The factory service manuals have flowcharts to diagnose from trouble codes, step by step. Professional manuals like Mitchell also have them.

 

Here is a link to some troublecode information but it looks like you are past the point that they might help.

 

http://www.troublecodes.net/Subaru/

do post #3, if codes come back, do post #2 cause the air flow sensor is prolly WAY more expensive than the temp sensor. Reset the ECU after any work on the system.

 

 

Carl

Any idea of what needs to be checked/ replaced for codes P0113 and P0118 (Intake Air Temperature Circuit High Input / Engine Coolant Temperature Circuit High Input)?

 

The code says it is for high circuit input so I would think this means the circuit to the sensor is probably open. I would check for a disconnected connector at the sensor possibly. It may be near the MAF area.

 

The sensor may be bad also but this could be checked with a ohmmeter.

The code says it is for high circuit input so I would think this means the circuit to the sensor is probably open. I would check for a disconnected connector at the sensor possibly. It may be near the MAF area.

 

The sensor may be bad also but this could be checked with a ohmmeter.

 

Good idea, wonder if these wires share a harness somewhere that got cut/burned or a connector or ground connection?

 

 

Carl