Fault code P0118

[Fatboyjarv]

Hi there I get this fault code P0118 engine coolant temp circuit, can anyone advise me whe to start to look or what i need to change thanks tony

[bez101]

Possible Symptoms


Difficulties with starting a cold engine.
Starting the engine when engine is warmish or warm, idle rpm immediately is 1200 - 3000 rpm.
RPM at idle is irregular.
With all engine temperatures idle rpm will often vary between 900 - 1000 rpm.
With engine warm (90 °C) the engine temperature suddenly drops (70 °C) and slowly comes back to 90 °C.
Bad acceleration during warm-up.
Diesel Engines: Glow plug indicator may be on for a longer than normal time or at ambient temperatures where it shouldn't come on at all.
Possible Causes


The electrical signal coming from G62 is too low
Wiring and/or connections faulty (short circuit?)
Engine Coolant Temperature Sensor (G62) faulty
Possible Solutions


Check wiring and connections
Check / Replace Engine Coolant Temperature Sensor (G62)
Special Notes


In many cars between MY 1995-2002 the G2/G62 had a bad reputation for failing often. The original G2/G62 sensor is black and the improved replacements are green.
Retrieved from "http://wiki.ross-tech.com/index.php/16502/P0118/000280"

[Crasher]

Which year and engine?

[Fatboyjarv]

2002 year 1.8 turbo quattro if this helps i went to audi to see what they would say and i was pointed too a temp switch which they change about 7 a week for the same fault.

[Crasher]

Yes, we do about 4 a week.

[Fatboyjarv]

Thanks for everyones help now all i have to do is change it ?

[A4B6Cab]

TONYJARVIS

Sorry to drag this one up from many moons ago mate, did you change the sensor and did it clear the fault?

[Fatboyjarv]

Yeah replaced the sensor and all was fine and not had any problems again, so all good.

[A4B6Cab]

Cheers Tony

What model is yours? Mines a 3.0 2003, do you know if its located on passenger side right at the back by the bulk head, or actually in the expansion tank (read this location somewhere on line)

Thanks again