Question about 1999 Volvo S80

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Abs require service

Ran a scan and came up with the code of p1550, please advised. We checked the brakes and they are good,

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Disconnect your battery for 24 hrs all your codes going to be cleared if your brakes abs sensors and abs module are fine say bye to your codes cause ecm save all info and codes

Posted on Oct 27, 2012

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The code is for the Vehicle Speed Signal (VSS). The VSS is produced by the ABS electronic control unit by averaging wheel speed sensor inputs and sending a digital signal via CAN bus to other modules that use the VSS. To test the ABS, a Volvo-compatible scan tool is necessary. If one is not available, the car should be sent to a Volvo dealer for ABS diagnosis. I can tell you however that most of the cars are fixed by replacing the ABS Control Module.

Posted on May 22, 2008


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ABS/Parking Brake?Service Engine Lights are on But Runs Great

Does ABS work properly? Get on dirt road and try to lock brakes (do this carefully insuring no police car tailgating,lol) Could be bad wheel speed sensor. Check codes with scan tool capable of reading ABS and trans codes.

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My abs light came on then the break light followed what do i do?

This is common for most cars. The brake light is required to come on with the ABS. But the ABS is not required to come on with the brake. If both lights are on I would take it to Auto-Zone or Advance Auto and have a free diagnostic scan run. With the codes they provide we can further suggest action from there. Typically ABS codes are related to wheel sensors. If 1 sensor goes bad it sets a code pinpointing its location. Not to fear tho..Even with the ABS light on you still have good brakes. In the event of ABS failure the braking system reverts to standard braking.

Dec 10, 2011 | 2000 Chevrolet Malibu

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Brakes just done, Traction and ABS lights are on consitancy. The brake line comes on and off.

cars or trucks that have an abs brake system, have an abs pump controller, if you replaced your brakes and and let fluid escape at each wheel, air can get into the abs pump, and will require an abs scan tool, to bleed the abs pump. there is no shortcut to doing this function that is safe. not all shops will have this
scan tool, its not a regular scan tool with an abs code reader that allows you to see the codes, you will have to call around to get the best price. the dealer has the scan tool or other shops may have it. and you cant just go buy the tool, its expensive. min. charge around 100 dollars on up for a shop to bleed the abs pump. good luck!

Sep 11, 2011 | 2003 Ford Focus

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I have a 1999 expedition,the abs light is on. i replaced all the brake pads and put on all new roters.the brake petal has good pressure and seems to be normal. all the calipers have been checked and ode...

The vehicle may just need to be reset by a shop with an ABS Scanner. Have the system scanned and reset; at that time you will find out if there are actually any error codes in the system.

May 18, 2011 | Ford Expedition Cars & Trucks

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I put the computer on my volvo v70 n i have this code ..p0460,p1618,p0722,p1550 and i like to know what r they and how can i fick them cuz i need to pass the inspection to get it register . in the dasboard...

Per other sites I've seen these 2 codes p1618,p0722, are your ABS module. It can be taken out and re soldered and will work fine. Many Volvo mechanics know how to do this or you can find a repair service on Ebaymotors possibly. My guy charges me $150. Supposedly you can even drive the car without the module installed but you won't have abs so don't expect to stop as you usually would with a correctly working ABS. Your tires will now skid old school instead of the abs module taking over and pullsing your brake pedal, etc.

Oct 28, 2010 | 1999 Volvo V70

1 Answer

The abs brake in my car keeps blinking and making noises and i need to know how to disconnect the abs brake completely

its more advisable to repair the abs than to disconnect vehicles do not pass inspection with the abs disconnected -since the trouble code will be in the computer memory ---check the connections to the sensors the biggest problem is usually debris knocks loose the connection or damages a wire ---have the car scanned most auto stores such as auto zone / advanced auto offer this service for free the trouble code will pinpoint the problem for u ----but if u still want to disconnect the abs remove the fuse [[some cars and trucks sometimes have other components attached to the fuse or if u have traction control will shut it down also ]]]]

Jul 10, 2010 | Cars & Trucks

1 Answer

ABS light, Brake light, and trac control lights on no brake problems. have to turn off engine and restart to clesr lights 2001 windstar

You most likely have a problem with the ABS brake system. First, check your brake fluid level as many vehicles have a fluid level switch that monitors brake fluid level and if the level is low it can turn off the ABS and turn on all those lights.[ABS is part of the Trac control] If that is good then you may have a failing wheel speed sensor, wiring, or a problem with the ABS controller itself which would require having someone connecting to and reading the ABS service codes with a scan tool to identify what the system saw that caused it to turn itself off. Brakes are a very important safety item so you should get it repaired as soon as possible!

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1 Answer

What is the description of Code P1550 as defined on emissions test for 2000 Volvo S80?

P1550 "manufacturer controlled speed metering"
Basically the code means the ABS module either lost communication or there is a fault in either front WSS's.
You need to get a scantool to access the ABS to really diagnose it.

Apr 01, 2010 | 2000 Volvo S80

1 Answer

Anti lock brake light and service stability system

check fuse and relay then check the wires and connections to ur abs check the abs sensors connections that they are hook into clip properly if good have car scanned for the trouble code some auto stores such as auto zone / advanced auto scan for free the code (s) will give u a start point

Nov 04, 2009 | 1998 Cadillac DeVille

2 Answers

Code P1550

P1550 means PSPS Out Of Self Test Range

Consult an expert around you to fix this issue.

Sep 26, 2009 | 2000 Volvo S80

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