Question about 2004 Ford Ranger

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Oxygen sensor 2004 ford ranger--after replacing the O2 sensor do the codes need to be reset to make the check engine light go out, if so how

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Try and unplug the battery, leave it off for about 5 minutes then go back and plug it in and see if that solves it

Posted on Oct 26, 2008

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Yes you need to reset.
only way is to have it plugged into with a scan tool

Posted on Oct 26, 2008

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Will replacing bank 1 o2 sensor clear engine light if thats the fult code comming up? and where is it located

o2 sensor replacement will not necessarily clear code . It may be necessary to use a scanner for that . O2 sensors are located after the cat converter and is not a heated unit as is the HO2S unit

Jul 22, 2014 | 2006 Ford Ranger

1 Answer

Ranger problems

run fault codes and check for O2 sensor problem and MAP/MAF sensor problems. If it is misfiring then codes for injectors and plugs may also appear

Jul 18, 2014 | 2002 Ford Ranger Regular Cab

1 Answer

Engine check light came on and read oxygen sensor replaced sensor and light came on again, what other conditions would cause this?

Well I would need the actual code to say for sure, but generally the code does not say to replace the sensor.
It says the data coming from the sensor is not valid, or there is a problem with the sensor circuit. So the sensor has to be tested first.
Sometimes the sensor is the problem, but only about 50%.

Apr 09, 2013 | 2004 Ford Taurus

1 Answer

I took my ford freestar to the machanic in town and he replaced all four of my o2 sensors but my check engine light is still on and now it shows that i have a p0054 and a p1000 code now i have to take

code P054 heated oxygen sensor bank 1 sensor 2 heater resistance. code P1000 obd2 moniter testing not complete.get this code when battery power disconnected to the fix problem take vechicle to shop they can use a scanner to erase codes reset the PCM.

Feb 18, 2013 | 2004 Ford Freestar

1 Answer

1999 Ranger IAC and PCM problems

i would start looking for vacuum leaks first,

Jun 20, 2012 | 1999 Ford Ranger SuperCab

2 Answers

P0138 and p0158

These codes, po 138 bank 1 sensor 2 shorted to voltage and code po158 means bank 2 sensor two shorted to voltage. these are the two rear oxygen sensors in the exhaust system. there two up frt and two in the rear, check the wiring on the two rear sensors, make sure that the wiring is not cut or stuck between metal. if the wiring is good then replace both rear sensors, when you get them ask for the left and right after the cat sensors. or bk1 s2 and bk2s2. after replacing them reset the computer. go to an auto parts sotre or if you have a code reader you can do it. hope this helps good day.

Feb 19, 2012 | 2004 Dodge Stratus

1 Answer


  • Most common issue is the MAP sensor or the O2 sensor. It could be either one. Do you have a Check Engine Light on? If so please go to Auto zone (free scan) or a mechanic or the dealership (rip off) and have it scanned and put the code here so I can give more specific details and repair information. This can also be a fouled or bad plug[s], bad wire[s]. Could be a faulty fuel filter as well.
  • If this were my truck and had no Check Engine Light on first I would check all the plugs. If it has been a while I would replace the plugs as well as the wires (on principal).
  • Check the MAP sensor (sometimes in California you may have a MAF sensor even for this year truck as part of an emissions requirement. In this case check this too.)
  • Check the O2 sensor coming right off the manifold. You need a O2 sensor (sniffer) to test it before replacing. If you don't have one you need to buy on, have it tested at a shop or just replace it. I recommend testing before replacing anything but sometimes that is more hassle than a quick replace.
  • Check the air filter and make sure it is clean and the air intake is not blocked at all.
  • Get codes pulled first if their is a Check Engine Light on as this will cut out the "what if's." Whats happening is the air to fuel ratio is going a little wacky. Straiten that out and your truck will go back to normal.
  • Hope this helps.

Regards, Tony

Jun 09, 2011 | 1987 Ford Ranger

2 Answers

1999 ford ranger 4x4 4.0L motor is skipping replaced camshaft sensor,crankshaft sensor,new coil pack,new plugs,wires,and replaced mass air flow sensor,now its still skipping and codes pulled are showing...

P1151 means a lean bank 2 O2 sensor
P1152 Means a rich bank 2 O2 sensor
P1309 Means miss fire detected
I would check your fuel injector for fouling
When they foul the will develop a drip
Causing a fuel fluctuation that will have O2 sensors reporting rich and lean voltage changes
This causes the pcm to adjust injector pulses making them shorter and longer.
causing more fuel or less fuel.
From this condition you may see plug fouling.
Also check for leaking or faulty fuel pressure regulator or restricted return line.
Most of the time it wont be a bad O2 sensor the O2 sensor is just doing its job.
You also have already changed the plugs and Map so there already out of the way.
If this helps please give me some feed back
Hope this works for you FixYa

Jan 29, 2011 | 1999 Ford Ranger SuperCab

2 Answers

Check engine lights on 99 ford ranger ODB codes 3- need solutions before in shop takes me to the bank help #1- P1506 #2- P1131 #3- P0171 I already know what they mean, got them written down. Need...

DTC P1506 is set when the PCM detects the engine idle speed is greater than the desired rpm. This is most commonly caused by a dirty or bad IAC valve. Cleaning the throttle body will, most likely, cure this problem.

p1131 means that the bank #1 O2 sensor, the bank closest to the firewall, cylinders 1-3 is showing a lean mixture. Could be a vacuum leak, a misfire on that bank, an exaust leak upstream of the O2 sensor, fuel control or injector problem on that bank, a faulty O2 sensor, faulty PCM, faulty wiring in the engine control wiring harness.

In the vast majority of cases, simply cleaning the MAF sensor does the trick. I find it's best to take it off and spray it with electronics cleaner or brake cleaner. Make sure you are careful not to damage the MAF sensor, and make sure it's dry before reinstalling also Inspect all vacuum and PCV hoses, replace if necessaryCheck for a dirty fuel filter and proper fuel pressure

May 19, 2010 | 1999 Ford Ranger SuperCab

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