Q: Car is reading trouble code PO136 01/01

asked by on October 24, 2016

My 2002 ford escape is reading a code PO136 01/01 I dont even think that is a good code. Replaced sensor sensor 1 bank1 was ok for about 2 days came back on same weird code please advise?

My car has 160000 miles.
My car has an automatic transmission.

Oxygen Sensor Replacement $108.80 - $869.59 Get a Quote
Check Engine Light is on Inspection $79.99 - $89.99 Get a Quote

Hi. There could be a couple of things going on here. There are multiple oxygen sensors on your car and sometimes what we think bank 1 is may not be and the wrong oxygen sensor is replaced giving us the same P0136 code as before.

Another possible causes is the part that you have could be defective from the parts store and cause the code to come back after replacement. Fords are also know to throw oxygen sensor codes when the car has a vacuum leak in the engine or loose or broken vacuum lines.

To avoid any unnecessary repairs, I suggest you have a certified technician from YourMechanic come to your home and further diagnosis your car’s trouble code.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

What others are asking

My wheel bearings are making noise.

Hey there, thank you for asking about your 1996 Ford Contour. If your wheel bearings are noisy then you should have them checked to see which one is bad and replace the bearings. The front axle bearings are part of...

Car stopped after rough idle

This is a common symptom of a faulty idle air control module. This module regulates the control of air being mixed with fuel at idle. When this is faulty, it will cause an imbalanced amount of air and fuel to...

Check engine light came on and driver smelled gas

This is a known issue in many of the Audi's. An epoxy fix, as you may know, is a very tricky and somewhat of a gamble-type of fix. There is a chance it may hold for a very long time and there...

When I turn sharp left and accelerate from a stop there is a grind at a certain point in the turn.

I suspect that you have a bad wheel bearing in the right front hub and when pressure is put on it in turns the bearing is grinding or the brake rotor is rubbing the caliper bracket. Have the brakes and...

emmissins test says i need oxygen sensor heater

Hello, thank you for writing in. The error message you got about the low threshold means the oxygen sensor has failed, the fuel system is off, or the catalytic converter is having issues. The amount of information available isn't enough...

Clutch doesn't work

The clutch master cylinder supplies pressure from your foot to the clutch slave cylinder. A fluid leak at the master or the slave cylinders would indicate the problem. I would recommend inspecting the fluid level and adjustment. A fluid bleeding...

Crackling, grinding noise coming from the front.

As you are guessing, yes, the noise could be due to wear or a failure in the transmission or differential. A trained mechanic will sometimes be able to "source" the noise simply on inspection, once he or she hears it....

Leveling kit using simple bolt on strut extensions

The strut extensions are the least expensive kit to level the front of the truck. This kit is installed by putting a 2 inch spacer on top of the strut without taking the strut apart. It should not change the...

Check engine light on after storage.

Autozone cannot hook a code reader to any vehicle manufactured before 1996 generally because these are not OBD-II equipped vehicles. An experienced technician like one from YourMechanic however is capable of pulling the check engine light fault codes fro the...

Related articles

P0779 OBD-II Trouble Code: Pressure Control Solenoid B Intermittent
P0779 means that the Pressure Control Solenoid B, is receiving intermittent voltage signals due to low or dirty fluid, faulty solenoid, or module.
P2250 OBD-II Trouble Code: O2 Sensor Ref Voltage Circuit High Bank 2 Sensor 1
P2250 means an issue with the upstream oxygen sensor voltage circuit in bank 2 due to a faulty sensor, fuel pressure, or engine or exhaust leaks.
P3429 OBD-11 Trouble Code: Cylinder Exhaust Valve Control Circuit/Open
What What the P3429 code means This code indicates that there is a problem with the exhaust valve on cylinder number 4. Your vehicle’s control module detects that the measured values from the MAP sensor, MAF sensor, and TP sensor...