Question about 2009 Jeep Wrangler

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Po406 ganeric code on a 2009 jeep wrangler

Exhaust recirculatoin sensor a high circut is this the o2 sensors

Posted by Anonymous on


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Posted on Jan 02, 2017

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SOURCE: dtc codes p0155 & p0051

I had the same problem and found out I was sold the wrong sensor, my 4.0 has four, they are all different, when you install a new sensor, you must make sure you clear the trouble code before you start the engine, ignition on engine off, that should do it, it worked for me, also if you have your own scanner and can erase the codes yourself, the wrong 02 sensor will turn engine light on with cold start, then after I erased the code it would stay off all day until the next cold start, thats when I found out my new 02 sensor was for bank 1 sensor 2, and not bank 2 sensor 1, hope this helps

Posted on Jan 19, 2009

  • 3 Answers

SOURCE: 92 Jeep Wrangler MAP sensor bad?

This may not be your MAP but your Catlettic Converter. I also own a 92 Wrangler and had some of the same issues. My issue was actually a couple of things but they all came from a crack in my exhaust headder.

You may want to check your exhaust headder for cracks. If there is even a small one, (which are VERY common w/ YJ's) than your O2 sensor is thinking that the engine is running too lean. Therefor telling the fuel pump and injectors to dump more fuel into the engine. Well, truth is your not running too lean, in fact, you begin running too ritch.

The unburned fuel that is now comming out through your exhaust collects on the porslen screen inside your catalettic converter where it burns off, causing the screen to melt together. Resulting in a clogged cat.

The only way to fix this is to replace the ehaust headder (welding the crack will not work) and replacing the cat. This would explane your loss in gas mileage and power, due to over back pressure. The ticking sounds like the back pressure working on your valves.

Hopefully I'm wrong and this is not your issue because it is a very expencive repare. You're looking at around 350.00 to 500.00 just for a good headder and atleast 250.00 for the cat. However, an easy way to test this is to take a flash light and have a good look at your headder anywhere there are joints where pipes come together. Look for black, ashy spots above and around the joint. If you see this anywhere then I hate to tell you but this mite just be your problem.

Posted on Mar 18, 2009

  • 383 Answers

SOURCE: jeep wrangelr Crank Position Sensor

wall5552: there were two engines used in 1992 Jeep Wranglers.
A 2.5 liter and a 4.0 liter. HOWEVER>>>> The location for the crank angle sensor is the same for both.
It is located on the bell housing up near the front at about the 10:00 PM position.
The Cam position sensor is located in the Distributor on both engines as well.

Posted on May 10, 2009

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SOURCE: eng.lightis on code#p0031.

Have you diconnected the battery for 20 min to reset the puter?

Posted on Sep 11, 2009

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SOURCE: O2 code p0152 how repair replaced the sensors [4]

The O2 sensor is located on the exhausts manifold, or/and on the cat. Converter. Some cars have two.

Also, for more details, can review the Jeep ZJ Service Manual ZJ-Secc-14-Fuel-System

Check here for Reset Codes.

Good luck (remember rated this help)

Posted on Oct 19, 2009

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2 Answers

Jeep engine problems

Check for intake leaks, intake hose leaks, check mass air flow sensor.
02 sensors will keep setting off a lean code until the air problem is fixed.

Jul 20, 2014 | 1997 Jeep Wrangler

1 Answer

Engine light on with P2096 code

Did you replace the O2 sensor after the catalytic converter? This code is set by the rear O2 sensor. It usually indicates early failure or restricted catalytic converter. May want to have an exhaust back pressure test performed.

Jul 07, 2014 | 2005 Jeep Wrangler

1 Answer

I have a 05 jeep wrangler the eng light is on comp says o2 senes b1 & b2 high voltage 250 km to a tank

If the oxygen sensors on the vehicle are faulty then that could easily cause the poor fuel economy. Replace both of the O2 sensors and clear the code with a scan tool. You should start getting better fuel economy. I hope this was helpful.

Feb 22, 2011 | 2005 Jeep Wrangler

1 Answer

I have code p0137 coming up on my 2003 jeep grand cherokee laredo what does the code mean?

P0137 - Oxygen O2 Sensor Circuit Low Voltage (Bank 1, Sensor 2)

Essentially the same as P0136, P0137 refers to the second oxygen sensor on Bank 1. P0137 means the O2 oxygen sensor's voltage remained low for longer than 2 minutes. This, is interpreted by the ECM as a low voltage condition and sets the MIL. Bank 1 Sensor 2 is located to the rear of the catalytic converter and should produce an output signal relative to oxygen storage capacity of the catalytic converter. This rear (sensor 2) sensor is less active than the signal produced by the front sensor. However, if the ECM senses the sensor is inactive, this code will set.

Symptoms: There may be no visible symptoms to the driver, other than the MIL (Check Engine / Service Engine Soon) illumination.

Causes: A code P0137 may mean that one or more of the following has happened:
* Faulty o2 sensor Exhaust leak near the rear sensor
* Plugged catalyst
* Short to voltage on O2 signal circuit
* High resistance or open on O2 signal circuit

Possible Solutions:
* Replace faulty sensor
* Repair exhaust leak near the rear sensor
* Check for restriction in catalyst and replace as necessary
* Repair short, open, or high resistance on o2 signal circuit

Hpe hti shelps (remember comment and rated this).

Jul 26, 2010 | 2003 Jeep Grand Cherokee

1 Answer

Where is the h2o sensor located in a 1989 jeep wrangler

Do you mean the O2 sensor? That's located on the exhaust just below the carb.

Jun 25, 2010 | 1989 Jeep Wrangler

3 Answers

What does the code po406 mean?

P0406 Exhaust Gas Recirculation Sensor A Circuit High

Site below gives instructions for repair. I would try to remove and clean EGR valve before replacing...just depends on your budget..

May 31, 2010 | 2007 Dodge Ram Truck

1 Answer


A p0057 code is related to the heater circuit voltage for the bank 2 sensor 2 Oxygen sensor. The PCM (computer) controls a heating element inside the O2 sensor that helps the sensor reach a high temp in order for the O2 to start working faster. It seems this circuit is not working, therefor the PCM alerts us by displaying a trouble code. In most cases, replacing the O2 repairs this code.

May 04, 2010 | 2005 Jeep Wrangler

2 Answers

I have a 2002 Jeep Wrangler TJ Sport and it misses then it doesn't whats wrong?

start with simple tune up plugs and plug wires and cap and rotor if it still misses check egr valve and exhaust sensors make sure it exhuasting right

Oct 21, 2009 | 2002 Jeep Wrangler

1 Answer

97 jeep wrangler 2.5 running lean

check fuel pressure and check exhaust for leaks. exhaust leaks caqn play with the o2 sensor readings

Sep 15, 2008 | 1997 Jeep Wrangler

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