Question about 2001 Volvo S40

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Volvo S40 OBD II P0171 & P0237

Check engine light is on. Hesistation on highway underacceleration. Sudden onset.

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For p0171 it could be a few things like intake/exhaust leak,air system,map/vaf sensor,fuel presure/pump,injector(s),ho2s(heated oxygen sensor.

Posted on Sep 19, 2008

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Im getting P0171 code- lean .


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Jan 27, 2016 | Cars & Trucks

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Having trouble locating fuse boxes or OBD port in your Volvo C30, S40, V50 or C70? Check out our quick tutorial about cabin and engine bay fuse boxes. Also on-board diagnostics port.

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What is the code on a s40 t5 21733118


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Jul 02, 2014 | Volvo S40 Cars & Trucks

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What code is 21733118 on my 05 volvo s40 t5


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Jul 02, 2014 | 2005 Volvo S40

1 Answer

Hi everyone, Check Engine Light came on last night on my 2007 S40 2.4i with 68K miles on. I had the OBD II scanned with Actron OBD II AutoScanner and got P2402 code (Leak diagnostic unit, pump; Leak...


Signal too high

Checking the wiring
Check the cable between engine control module (ECM) terminal #B23 (#C23) and leak diagnostic unit terminal #2. Check for a short-circuit to supply voltage.
Remedy as necessary.
<the terminals are marked>

This usually means the computer is having issues!

Dec 27, 2010 | 2007 Volvo S40 2.4i Sedan

1 Answer

The OBDII scan read code P0236 y P0171 yesterday today read P0237 y P0101 whats the problem?? Is a Volvo S40 2002 1.9T


P0236 Turbocharger Boost Sensor A Circuit Range/Performance
  • P0171 System too Lean (Bank 1)
  • P0237 Turbocharger Boost Sensor A Circuit Low
  • P0101 Mass or Volume Air Flow Circuit Range/Performance Problem
  • i would start, given these codes, to look around the air duct assembly for signs of cracks or disconnected hoses resulting in a vacuum leak.
  • Jan 25, 2010 | 1999 Volvo S80

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    Check engine light is on. OBD reads p0191 &


    Replacement of the fuel pump would be the case here,unless the fuel filter needs to be changed.To find out,remove the fuel filter,and blow threw it with your mouth,kinda tast bad but it will tell you if the fuel filter is restricted.You should be able to blow threw it easy.

    Oct 08, 2009 | 2005 Volvo S40

    1 Answer

    Volvo S40 2.0T (2000 X Reg) P0102 P0171


    Hi, Since you have both codes Fuel system lean and MAF low I would bet money on that you have an intake air leak after the throttle. Check all hoses connected to the intake manifold, gaskets, injectors are put in place etc.

    Aug 22, 2009 | Volvo S40 Cars & Trucks

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    ODB II Code P0236 & P0237 on a 2001 Volvo V40. What do I need to fix?


    P0236 Turbocharger Boost Sensor A Circuit ange/Performance and P0237 Turbocharger Boost Sensor A Circuit Low. I would check to ensure your Sensor is didnt come unplugged and if not I would replace the Boost Sensor. Thanks for Using FixYa!

    Sincerely,

    JC

    Dec 06, 2008 | Volvo V40 Cars & Trucks

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