What is the P0440 trouble code on a 97 850 volvo non turbo

Question edited for clarity.
Question moved to model category.

This is a strange code that doesn't appear to have one definitive reason, it's a bit of "you have a bit of a problem, but we aren't sure". Just Answer dot com mechanic says it is the MAF Sensor.

https://p1004-volvo.autotroublecode.com/

http://p1004.engine-trouble-code.com/

I have a 99 s70 volvo that has a p1004 code. I've been told

JustAnswer https://www.justanswer.com > volvo > iq32q-99-s70-v...
Feb 12, 2022 - On newer vehicles, the P1004 is for the short runner valve which is internal to the intake manifold and makes sure there is even air ...

1 answer · Top answer: HI This is 100% unrelated to your original question. I will answer this as a courtesy, but ...

Have 1999 Volvo S70 Non-Turbo. Codes are P0420, ...

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Apr 24, 2017 - Have 1999 Volvo S70 Non-Turbo. Codes are P0420, P0645, P1004, P1081, Symptom= intermittent stall. NO Check engine light on. Seems to accelerate ...

Error Code P1441 is defined as EVAP System Flow During Non-Purge Condition. This error code is a manufacturer-specific trouble code, meaning it does not apply to all vehicles makes. Rather, it applies only to specific vehicle makes, such as GM (Chevrolet/GMC), Nissan, Pontiac

Error Code P1441 is defined as EVAP System Flow During Non-Purge Condition. This error code is a manufacturer-specific trouble code, meaning it does not apply to all vehicles makes. Rather, it applies only to specific vehicle makes, such as GM (Chevrolet/GMC), Nissan, Pontiac

P0440 is an OBD-II generic code that the engine control module (ECM) has detected a leak in the fuel tank vapor system or a vapor pressure sensor has malfunctioned.

p0313 O2 sesor

P0300 Random Misfire Detected Code

Read more at: https://www.obd-codes.com

This code refers to a communication error on the CAN communication line. The vehicles computer has found a problem with the communication from one or more other modules to itself. This code is sometimes set if the battery has gone dead/low or has been disconnected. Other causes can be related to loose connections/faulty modules or wiring problems

Po133 is and oxygen sensor code. Replace the front oxygen sensor use a bosch or OE sensor only. P0442 is and evap system leak. Most common fault is a cracked hose at the evap cannister at the right rear of the car.

code p0440 refers to evaporative emission (EVAP) system--malfunction=== causes --hose connections --intake leak--EVAP canister purge valve
code po441 refers to EVAP --incorrect flow detected==causes the same as for po440
code po446 refers to EVAP system vent control --circuit malfunction===causes --wiring---EVAP can purge valve--ECM
generally I would replace the purge valve as it is common to all codes

http://www.permoveo.ltd.uk/tabid/122/OBD-Error-Code/P0440/Diagnostics/Volvo/Default.aspx Look at the link I would start with the gas cap, check the vacume hoses at the canister, then replace the valve.

Trouble code p0440 may be a simple as an improperly replaced gas cap, or a crack in one of the evap hoses.
Have the code cleared, if it comes back, find a shop that will do a "smoke test" to find the bad evap hose, and have it replaced.

Volvo Code Retrieval Accessing Trouble Codes 89-93 models (and later non-turbo/non-OBDII models)

Fuel Codes Locate the diagnostic unit behind left strut tower and remove its cover.(see image) Connect selector cable to socket #2,which tests the fuel codes. Turn the ignition switch to the ON position(engine not running). Enter the diagnostic mode by pressing the push button on the diagnostic unit for at least 1 second, but not more than 3 seconds. The red LED light will start to flash,count the number of flashes in 3 flash intervals. The flashes will be seperated by 3 second intervals.Make note of all codes. If no codes are stored,the LED will flash 1-1-1,which means the fuel system is operating correctly.


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Ignition Codes To access the ignition codes,follow the above procedure,but with the selector cable connected to the #6 socket on the diagnostic unit.
NOTE:Turbocharged models may have seperate codes for the turbo system and are accessse by hooking the selector cable to the #5 socket.

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what code is the trouble light giving--have car scanned some auto stores such as auto zone / advanced auto scan for free the trouble code will give u a place to start

p0440 code means that the evap system has a leak. This could be caused by a bad or improperly installed gas cap. Either that or the purge solenoid has failed or the canister is plugged and not working properly.