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Error code 232 on volvo s40

I recently had a error code pop up on my volvo saying reduced engine perforance and had a diagnostic test and came up with 232 i believed it was the app sensor so i had it changed but code is still showing could there be another problem?

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Code efi-232 is long term fuel trim, idling. intake/exhaust leak, fuel pressure, excessive fuel in engine oil, engine oil level to high. injectors. EVAP canister purge valve, wiring MAF sensor, ECT sensor HO2S. hope this helps and let me know if you need any more info

Posted on Feb 14, 2012

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SOURCE: volvo s40, loosing power

if you have over 125k miles on it chances are your about time for a new catalytic convertor... can cause a rotten burnt smell... lack of power.. and even a stall... or no start

Posted on Sep 22, 2008

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I have a 2003 Volvo s40. Recently the check engine light and DSA light have been coming simultaneously. Sometimes it is only the check engine light. The only symptom I have seen is that the car turns over...


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I have a 2006 Volvo S40 and the check engine light has recently come on. I just had the 60k mi service about a month ago.


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Oct 25, 2010 | 2006 Volvo S40

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I have volvo s40 2004 The engine light comes


Sounds like your dealer is feeling its way. which sensor did they say they changed and why. Do not pay for this ****, you took it to the dealer with a warning light and they say they changed something in order to attempt to cure the warning but they failed. About as much use as changing the seat covers and emptying the ash trays! When you say noise, is this a squeal, a crunch, is it continuous or is it during change gear. Does the car slip when in gear, is there vibration. Check your engine oil and transmission oil levels

Apr 24, 2010 | 2004 Volvo S40

3 Answers

How do you reset the check engine light on a volvo S40? I did my own oil change and it pops up every time I start my car.


The Check Engine light has nothing to do with changing the oil. The light is on because there is a problem with the emissions system. Even if you reset the light it will just come back on unless the problem causing it to come on is repaired. You will need to have the ECU scanned with an OBD2 scan tool. That tool will retrieve the code that has been set by the ECU. The code will tell you what part is being effected, but not necessarily what part or parts are defective. To determine that takes training, experience, and diagnostic skills. I suggest you seek professional help. If the engine is running fine there is no hurry but if it is not running as it should, then do not put this off.

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It's possible that a sensor has failed

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I have Volvo S40 1.9 T. Check engine is on the last 4 month. Test result was 5 different error registered. After setting up the check engine light and after 40 miles test drive,the light on again and test...


it could be one of 2 things the cam sensor or the co sensor on the exhaust, both of these when warmed up will set off an eml light and confusing error codes. as when engine is stopped they reset themselves. but codes will be logged and they need to be warmed up again. cam sensor faults is when the resistance in the sensor become erratic. as it has volts on the sensor will go up and down. co sensor can be the heater as it has to heat the sensor to make the sensor reliable. it takes a few seconds for the sensor to read. if it fails and come up on eml light but then turn engine off and then start it again it can be this cam and crank sensors work the same way they can over heat them selfs of time and will both need replacing, i found its best to replace both at the same time.

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1993 Volvo 940 error code 232


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Engine diagnostic pulled codes 48 and 18


Hope fully you've already solved this problem. If not the problem just sounds like it a comms error between the diagnostic equiptment and the car.

Mar 16, 2009 | 2001 Volvo S40

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Volvo s40, loosing power


if you have over 125k miles on it chances are your about time for a new catalytic convertor... can cause a rotten burnt smell... lack of power.. and even a stall... or no start

Sep 04, 2008 | 2003 Volvo S40

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