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Check Engine Light - Code P455 V70-XC70 1998

posted by  someone claiming to be white wagon on  Thu Jun 6 05:28 CST 2002 [RELATED]

Hi:

My 98 V70 GLT (50K miles) just set the Check Engine light on Tuesday. The car is maintained far beyond the maintenance schedule and is never driven hard.

I had check engine light problems last fall, but those turned out to be oxygen sensor related. The check engine light had not returned since the sensors were replaced, that is, until Tuesday.

To try to save a bit of $$, I drove it over to AutoZone and had them pull the codes with their reader. The only code showing is P455, which in their guide shows "Evaporative Control System Leak". Yes, I know that some codes are Volvo proprietary, so their guide may not be right.

My gas cap is not loose - I double and triple check that every time. The fuel filler pipe does not have any significant gouges in it that would prevent a good seal with the cap. A quick check of the vacuum lines shows them to be OK ... except I haven't searched out the one behind the power steering pump yet. I did find a plug wire a little loose, but nothing else.

The only thing different on the day the code was set was that it was VERY hot that day ... around 90 degrees. Since the light hasn't turned itself off, there must be something that is not temperature related.

Any ideas?

1) Is the P455 code really the evaporative emissions system leak code, and
2) Anyone have other ideas for potential areas to look for?

Thanks in advance!








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    Check Engine Light - Code P455 V70-XC70 1998

    posted by  pdickins8 on  Sat Jun 29 20:18 CST 2002
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    I had a similar experience with my VOlvo when I passed through the Eisenhower Tunnel on the way into Denver on a 90+ day. It turned out to be a small hose that was not pushed all the way onto the nipple under the small plastic air pump cover on the drivers side front of the engine. It was only about 2/3 of the way on, and under such extreme pressure temperature conditions, it must have leaked a little bit. Take the plastic cover off and check the tube connections. I worked the tube the rest of the way on, and I have not had trouble since. Good luck.








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    Check Engine Light - Code P455 V70-XC70 1998

    posted by  someone claiming to be bill on  Thu Jun 6 17:23 CST 2002 [RELATED]

    Evap codes can be caused by a number of things. Common faults, loose gas cap, bad valves in gas cap, evap hose splice near steering rack popped apart, evap valve sticking open. The hose I mentioned comes from a valve on the fan shroud and goes down and accross the front of the subframe, then turns the corner and is riuted to the fuel tank. Just behind the P/S rack, there is a short rubber hose that joins 2 plastic hoses together. Sometimes the hoses come apart. The evap valve attaches to the fan shroud on the drivers side. It has 1 hose going to the intake, and the other hose is the 1 that goes down, across, and back to tank. With the engine running and the wiring conector disconected, there should be no vacuum on the tank side of the valve. If there is, ot's bad. Other causes for evap codes include leaking charcoal canister, stuck rollover valve, bad tank pressure sensor.








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    Check Engine Light - Code P455 V70-XC70 1998

    posted by  MilwaukeeVolvo on  Thu Jun 6 09:24 CST 2002
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    I dont know if this helps out or not, but if possible let the car sit for a day or so and the light should go off.

    I bought a used S 70 and the CE light came on right after i got gas 2 blocks from the dealership i bought!!! Worst of all, the car started missing but on a 2 hour journey home, i chanced the trip so that my Volvo dealer could look into it.

    Anyways, the car missed for a while then stopped. I parked it for 2 days and when i started the CE light was off!!!

    I have also read disonnecting the battery helps clear the CE light out








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      Check Engine Light - Code P455 V70-XC70 1998

      posted by  EVegvary on  Thu Jun 6 15:37 CST 2002
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      Hi all ~

      My "check engine" light also came on last week. 1999 V70 with 32,000 miles. It came on during a very, very hot day. I hadn't gotten gasoline for four days prior so it didn't seem that it could be a loose gas cap. I did some online searching and called my local dealer as the car is still under factory warranty - both revealed the same information. Let the car run through 10-15 cycles of driving and see if the light goes off - a maximum of one week and a min of 4-5 days. The service guy reassured me that the car was not going to self-destruct nor leave me and the little ones stranded. Sure enough, four days later, no light on start-up!

      Hope this helps.







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