Question about 2004 Mercury Mountaineer

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How do i fix engine codes p1000 and p2106 on an 04' mercury mountaineer

Engine fail safe light came on, got diagnostics and came back with those two codes

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Posted on Jan 02, 2017

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SOURCE: ABS light on a 2004 Mercury Mountaineer. How do I

Go to Autozone or Oreillys and see if they have a scanner for the ABS system. They usually scan for free.
The ABS will measure braking problems and things like worn brake linings and debris on wheel sensors.
You would want to verify the code light and then have the lining visually inspected.
There can be problems with the emergency brakes which require the rear rotors to be removed from the vehicle. Some of the rotors are a problem to remove because of rust.

Posted on Jan 01, 2010

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SOURCE: mercury sable 2001 duratec engine DOHC I get check engine light and diagnostic code PO401". Any suggestions?

Barring any vacuum leaks, P0401 is indicative of a bad EGR valve. Hope this answers your question. Best of luck.

Posted on May 30, 2009

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SOURCE: 1997 Mercury Mountaineer What is Catalyst Efficiency Below (Bank

it means the catalyst is worn out, the efficiency is monitored by sensors, when the Cat falls below a certain reading or "threshold" the code is generating telling u that u need a new catalytic converter.

Posted on Feb 18, 2010

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2 Answers

Mercury Mountaineer 2000 clicks while trying to start, turns over good with jump box but still wont start?

This engine is computer controlled, so when it stalled out the computer will almost always set fault code(s) for the problem if it is a component like a crank sensor or other device, if the engine failed in some strictly mechanical way then no code or codes may be present. You need to have the system scanned (diagnostic connector under the dash drivers side) for fault codes as a first step toward repair.

Dec 22, 2016 | 2000 Mercury Mountaineer

1 Answer

I have a 2005 mercury mountaineer the wrench light and service engine light comes on and moves very slow only in reverse witch causes the overdrive to light up as well what is wrong

Hello Veronica

The 'wrench light' is actually and 'engine malfunction light'. Something has failed, probably a sensor, and your vehicle is in 'limp mode'. Supposed to be just enough to get you to a garage. They will put it onto a Code Reader and then that tells you were the fault is and what needs replacing.

The error codes can be found here

Oct 16, 2016 | 2005 Mercury Mountaineer

1 Answer

How do I fix it 2005 Mercury Mountaineer with the overdrive light and check engine light coming on

Fault codes are there for a reason. Fuel injection engines were designed in the 80's to reduce pollution and protect the ozone layer. a malfunctioning fuel injection engine will cause pollution. Replace all bad sensors. Your engine should reset itself. in turn will run better, efficient and improved performance.

Feb 13, 2016 | Mercury Cars & Trucks

1 Answer

What to do when engine fail safe mode comes on

The car is trying to tell you something - listen to it, or pay a lot to fix it later.......

Sep 29, 2014 | 2005 Mercury Mountaineer

1 Answer


I understand all you said

Without the vehicle and a fresh
diagnostic approach, I personally
don't think any internet ideas will help

You still have misfires, that are spiking the PCM &
TACM on the throttle body and putting it
into ETC Fail Safe.

Feb 25, 2011 | 2004 Mercury Mountaineer

1 Answer

Overdrive light and engine light comes on

Over drive light being on is fine, check engine light being on you need to take it to a an advanced auto and have them put the OBD2 reader on it to see what codes it's giving, or take it to a shop and pay to have the code read then fixed just trying to safe you money.

Jan 28, 2011 | 2004 Mercury Mountaineer

1 Answer

Engine fail safe mode is on

go to autzone get free scan for dtc codes
report back

Oct 17, 2010 | 2004 Mercury Mountaineer

2 Answers

03 mercury mountaineer, service engine soon light came on. i was told it needed a oil change . we did that , now how do i get the light to go off ?

Your Service Engine Soon light has nothing to do with reminding you to change your oil. The light is controlled by the ECM (Computer) in your vehicle. It monitors various sensors in your engine and compares them to variables or programs that is in its memory. When something is not registering correctly or is outside of its parameters it will turn on a MIL(Malfunction Indicator Light)or in your case a Service Engine Soon light. You will need a OBD II ( On Board Diagnostic) reader or scanner to hook up to your diagnostic port under your driver's side footwell to read what code the ECM is putting out. Than with the code the mechanic can look up the code to see what part is sending a malfunctioning. The scanner can also read and erase the code too. You can have your code pulled up with a OBD II scanner for free from any AutoZone store.

Jun 03, 2010 | 2003 Mercury Mountaineer

1 Answer

In 97 mercury mountaineer, how to turn off "check engine" light

Go to the local parts store, have them check the codes (they will do this for free usually). It will tell you what sensor needs to be checked/replaced. Once the part is replaced, it will clear on its own. They can also reset the code, but it will come back if the trouble persists.

May 27, 2009 | 1997 Mercury Mountaineer

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