Question about 1999 Saab 9-5

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Getting code P0520 engine speed sensor. How do you replace this. ABS light, brake light. check engine light on. Speedometer does not work

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The engine speed sensor is located just above the oil pan at the rear of the engine. it is held in by one screw. For your abs issue see www.saabservices.com and look for abs light link. They can help you with those problems.

Posted on Apr 13, 2011

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Posted on Jan 02, 2017

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Speedometer not working abs and check engine light stays on also my brake lights dont work im getting 12 volts to every thing but brake lights all other lights front and rear work im only getting .11...


the brake lights not working is most likely a fuse , as for the ck engine light you have to get a scanner and find what codes you have same goes for the abs that also could be a fuse and you need a scanner to ck the abs code which is not the same as the ck engine , which is a emission problem but , they are still safe to use the anti locks just will not work but that is ok , as for the speedometer that could be something else maybe a fuse but I do not think so , is it digital or mechanical or electrical , be more specific on this one , could be a number of things

Jun 28, 2014 | Cars & Trucks

1 Answer

Transmission speed sensor


You could have a faulty speedometer/odometer combination meter causing a false Vehicle Speed Sensor error.
My 1998 Sienna had the following symptoms:
- Speedometer and odometer failed intermittently
- The check engine light would come on and I would get a p0500 code in the OBDII.
- The cruise control would stop working at the same time the speedometer failed.
There is a speed sensor in each one of the tires and they feed the speed information to the ABS ECU. From the ABS ECU the speed signal goes to the speedometer/odometer combination meter, and from there it goes to the Engine Control Module and to the Cruise Control ECU. I could see a signal coming into the speedometer/odometer, but no signal going out. Replacing the speedometer/odometer combination meter fixed the problem.

Dec 01, 2013 | 1998 Toyota Sienna

2 Answers

P0720 speedometer and car speed problems


if it worked for a short time then check the wiring around the sensor you would have moved them around changing the sensor

Aug 12, 2012 | 2002 Ford Escape

1 Answer

Uncle put new brake pads on vehicle (he worked on front and back brakes) and now the speedometer doesn't work, the abs light is on, check engine light, and the break light is on. what could have happened ....


Check for disconnected ABS sensors. The front sensors in the front are located next to the axle shafts. The rear sensor is located on the rear differential housing itself on top, in the middle. The ABS is monitored by the computer for performance. The ABS kicks on when the vehicle comes from a certain speed to a dead stop, keeping the wheels from locking up. That could be the reason for the speedometer not working. Or it could be a bad speed sensor. Both can also trigger the check engine light because it is monitored by the computer. The brake light usually comes on due to low fluid level. It can trigger the light, but not be low enough to impact brake performance. I hope this helps.

Oct 16, 2010 | 2000 Dodge Durango

4 Answers

Abs light and brake light came on wont turn back off


There is a sensor at the top of the rear differential for the ABS system. That sensor went bad and replacing it took care of the problem. What caused mine to go bad was apperantly water got into the differential when launching and loading my boat. check to see if gear lube needs to be replaced also.
The answer above is perfectly correct. When the ABS sensor on the diff goes bad the speedo no longer will work, the odometer stops recording mileage and both brake and ABS light comes on. You also loose O/D or "Lock-up" in the torque converter. The sensor is inexpensive and can be changed in about 30 mins. Good Luck!
I second the second answer :) My ABS light was on, my BRAKE light was on, my CHECK ENGINE light was on, my SPEEDOMETER wouldn't work below 35 mph, then quit working alltogether. Once the speedomenter quit working the odometer and cruise control quit working. I replaced the rear differential mounted speed sensor ($33) and then reset the CHECK ENGINE light by disconnecting the positive battery cable for a couple of minutes. EVERYTHING then worked.
Replace rear differential speed sensor as follows:
a) remove parking brake cable bracket (1/2" socket)
b) remove speed sensor bolt (9/16" deep socket)
c) remove metal speed sensor cover
d) remove speed sensor from rear differential housing (use channel lock pliers, twist gently back and forth while applying upward pressure. Once the speed sensor has a small gap between it and the rear differential housing, insert a flat-blade screwdriver and gently apply upward pressure while gently twisting speed sensor back and forth.
e) disconnect speed sensor from speed sensor cable
f) lubricate new sensor with WD-40, insert into rear differential housing. It will NOT go in all the way by hand, so do NOT force it nor hit it with anything made out of metal.
g) replace metal speed sensor cover
h) Insert speed sensor bolt and tighten LIGHTLY until a small amout of pressure is felt. Tap speed sensor with rubber hammer until it pops into housing. Finish tightening of speed sensor bolt.
i) replace brake cable bracket, replace 1/2" nut and tighten
j) disconnect positive battery cable for 2 minutes, reconnect positive battery cable
h) start vehicle, enjoy,

Oct 21, 2009 | 1998 Dodge Ram 1500 4WD

2 Answers

SPEEDOMETER WILL NOT WORK AND ABS LIGHT AND PARKING BRAKE LIGHT ARE ON .


Change the speed sensor in the top of the rear differential

Aug 23, 2009 | 1999 Dodge Ram

2 Answers

Volvo abs lights stays on


Usually the ABS computer knows what it is doing. You may want someone to hookup a scanner to the ABS test port.
When I had my speedometer and odometer act up, it turned out to be a bad alternator. You might want to check yours.

Jul 25, 2009 | 1999 Volvo V70

1 Answer

Speedometer doesnt work


Theres a sensor on top of the rear axle called a speed sensor replace it , That will fix the abs and speedo problems.

Feb 15, 2009 | 2001 Dodge Durango

3 Answers

1995 Buick Lesabre Speedo inop


It may be a faulty speedometer with a short inside, or a short on speedometer wirings or connector.

Whenever car vibration cause the wiring to short, there you lose speedometer and trans functionality.

You need to access the speedometer connector and wirings to
instrument panel to fix this.

Feb 01, 2009 | 1995 Buick LeSabre

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