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S90 Error Codes


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#1 volvo740wgn

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Posted 04 February 2008 - 08:54 PM

My 1998, S90 failed Mass. inspection because my check engine light was on. Because the check engine light was on it failed emissions. The two error codes that came up during diagnosis were, P0112 and P0116.

P0112 -Intake Air Temperature circuit low input

P0116 -Engine Coolant Temperature circuit range/performance problem

A sensor from radiator is broken and I think that could be causing one of the errors. I believe the only way to repair that is to buy on new radiator. Not sure which error is it though.

Anyone know what can cause these errors or where the problem is located?

Thanks



#2 DonutsDemise

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Posted 04 February 2008 - 09:57 PM

QUOTE (volvo740wgn @ Feb 4 2008, 03:54 PM) <{POST_SNAPBACK}>
My 1998, S90 failed Mass. inspection because my check engine light was on. Because the check engine light was on it failed emissions. The two error codes that came up during diagnosis were, P0112 and P0116.

P0112 -Intake Air Temperature circuit low input

P0116 -Engine Coolant Temperature circuit range/performance problem

A sensor from radiator is broken and I think that could be causing one of the errors. I believe the only way to repair that is to buy on new radiator. Not sure which error is it though.

Anyone know what can cause these errors or where the problem is located?

Thanks


They both probably mean the sensors are bad. I doubt you need a new radiator.
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1998 Volvo S70 T5M 196k
1995 Volvo 855 NA 5-speed 200k+

#3 MrWinkey

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Posted 06 February 2008 - 01:25 AM

You need a t-stat and an IAT sensor(cts sensor,whatever you want to call it) good luck getting the monitors up and ready!
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#4 Steven Mendoza

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Posted 08 February 2008 - 04:58 AM

Sensor should be in the thermostat housing on top of the engine, so start there before replacing the radiator needlessly. Radiators aren't cheap.
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