Question about 2001 Toyota 4Runner

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Trouble light 2 wd 01 4 runner; trac off & vsc trac lights are staying on & p0171 lean bank eng. issue. They all came on together. Veh. has 130,000 showing. Where would you start or should it go to dealer? I am david & this is my daughters ride.

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  • el diablito Oct 05, 2008

    02 toyota sequoia, shuts off when placed in rev. or drive, we already replaced the first gear which was all torn up and it now does the same thing but if you raise the rear it does engage, but with all kinds of rattling and grinding. it it the trac controll? Some one please help....

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Ensure your parking Brake is full disengaged if its full disengaged
You have a problem with the ABS system. Could be many possibilities such as wheel speed sensors or their wiring, or a problem with the ABS motorpack or Brake controller module. This is not a Zen problem of equillibrium in the brake pads. This is a functional or electrical problem in the ABS which also is the Traction Control. You need to get to a repair facility to fix this. It will probably cost you but it will be cheaper than guessing.

Posted on Jul 29, 2008

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VSC light came on, why?


Most of the time the VSC light will come on with check engine and trac off light. (picture of veh with squiggle lines behind it) Whatever triggers a Check eng turns the vsc and trac systems off. could be a loose gas cap or something related to emissions system. Most times it will have to be diagnosed. Veh maybe equipped to turn vsc off, there would be a button for it.

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Toyota 2001, 4-runner, 158k...the check engine,VSC/TRAC, and TRAC OFF warning lights came on at the same time and have stayed on...what could be the problem?


VSC lights always go on during a "Check engine" period so just get the engine fault code and DIY or go to a TRUSTED mechanic (or someone you trust goes to).It is likely an emissions problem.

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I have both lights on in my 2004 van also I have the engine light on. i took it to the dealer and they found the Yaw Rate Sensor (Vsc & TRAC) bad. The part is about$ 405 and is under the drivers seat. The other problems is the Catalyst System (engine light) about $1000 for parts.I have about 147,000 miles on my '04 and the problems started about 130,000.

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1 Answer

Ford windstar check engine light comes on after stopping when starting to get moving again shows p0171 & p0174 codes why??


P0171 indicates a lean condition. The most common cause of this is a defective mass air flow sensor. Also check if any vacuum leaks. P0174 OBD-II Trouble Code


Technical Description

System Too Lean (Bank 2)


What does that mean?

Basically this means that an oxygen sensor in bank 2 detected a lean condition (too much oxygen in the exhaust.

Note: This DTC is very similar to P0171, and in fact your vehicle may show both codes at the same time.

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Thanks.


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1 Answer

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Find out why the light is on and fix it. That should aleviate the light problems.

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1 Answer

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you need to have the computer scanned for codes and see what area is having problems. the vsc lights will come on when the check engine light is on.

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