Help! I have 96 Maxima SE and the check light was on. So I checked the ECU code and show 5 different failures as follows:
- Engine Coolant temperature Sensor (code 09 08 and code 01 03)
- Knock Sensor (code 03 04)
- EVAP control system pressure sensor (code 07 04)
- EVAP canister vent control valve (code 09 03)

How can all these fail at the same time?

Is it better to do it myself or let the dealer do it?

Are these expensive parts?

How come engine coolant temperature sensor has two different codes?

What is knock sensor?

What is EVAP?

Does anyone had these problems? Can someone tell me how to fix? if so, where do I get the parts?

 

Just clear the codes and see if they reoccur... none of these will destroy your engine instantly if they fail... I'm assuming the engine appears to be running fine. If it isn't then check into it further.

Check the sticky post for information on the actual codes.

 

The engine temp coolant temp sensor, if it's bad is probably making yoru car think it's cold all the time. If thats the case, your running to rich and causing PING which is setting off your Knock Sensor.

Start by replacing the engine coolant temp sensor, reset the ECU and see what happens then.