Question about 2002 Jeep Grand Cherokee

3 Answers

P0138 code - 2002 Jeep Grand Cherokee

Posted by on

Ad

3 Answers

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Jeep Master
  • 17,970 Answers

P0138 - O2 Oxygen Sensor Circuit High Voltage (Bank1, Sensor2)

The Heated Oxygen Sensor (2) located rear of catalytic converter produces an output signal relative to oxygen storage capacity of catalytic converter. Ho2S 2 signal is less active than signal produced by front oxygen sensor. This code sets when HO2 Sensor voltage is greater than 999 mV for more than 2 minutes (time depends on model. Could be as high as 4 minutes)

Symptoms: There may be no noticeable symptoms except for MIL illumination. Possible high fuel pressure can over rich the system.

Causes: A code P0138 may mean that one or more of the following has happened:
* Faulty O2 sensor
* Short to battery voltage in O2 sensor signal circuit
* High fuel pressure (not as likely)

Possible Solutions: Here are some potential solutions:
* Replace O2 sensor
* Repair short to battery voltage in o2 sensor signal circuit

Hope helps (remember to rate and comment this).

Posted on Sep 15, 2010

Ad
  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Jeep Master
  • 3,640 Answers

P0138 is 02 sensor cuircut high volts ( bank 1 sensor 2 ). 02 sensor in back of convertor is reading higher then the front one it is less active than the front one. bank 1 is the bank the #1 cylinder is at. so this means that # 2 sensor is behind convertor. have a good day!!

Posted on Sep 15, 2010

Ad
  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    President:

    An expert whose answer got voted for 500 times.

  • Master
  • 1,565 Answers

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

P0136 & p0138


I would replace the engine thermostat and clear the codes and drive it for a few days. P0136 is engine does not reach operating temperature

Mar 20, 2014 | Cars & Trucks

1 Answer

P0138 on 2008 Mazda 3 2.0


code p0138 refers to heated oxygen sensor (HO2S) 2 bank 1---high voltage===causes --wiring short to positive--HO2S---ECM
replace the HO2S unit using the correct tools.

Dec 23, 2013 | 2008 Mazda 3 2.0

1 Answer

What is the fix for p0138 on 2006 nissan sentra se


Po 136 ---is an oxygen sensor code for a sensor
on Bank #1 Sensor #2

Nothing to do with MAF

Also education & solutions can be for using Google

Put in------ OBD2 Codes PO138 nissan sentra

Mar 11, 2013 | Cars & Trucks

1 Answer

P0138(pd02) what does this code mean


P0138 O2 Sensor Circuit High Voltage
Code is for the second O2 sensor and is typically an indication that either the harness has become disconnected, or is wet; or the sensor itself has failed.

Jun 03, 2012 | 2006 Nissan Sentra

1 Answer

What mine P0138 code?


The first code, P0138 judging by what I have read, looks like a high voltage Oxygen sensor after the after catalytic converter

Dec 29, 2010 | Dodge Durango Cars & Trucks

2 Answers

What are codes p0307 and p0138 on dodge ram 2500 mean


P0138 (M). O2 Sensor Circuit High Voltage (Bank 1 Sensor 2) ..... P0307 (M). Cylinder # 7 Misfire. Misfire detected in Cylinder # 7.

Mar 19, 2010 | 2001 Dodge Ram 2500 Truck

2 Answers

Code p0138 for the second time


P0138 is code for o2 sensor Bank 1 Sensor 2. This sensor is the one behind the cat on the side of the engine that contains cylinder No 1.

Jun 15, 2009 | 1999 Dodge Ram

1 Answer

My check engine light is on and the default code is P0138


What kind of vehicle? I may have the book here.

Aug 01, 2008 | 2000 Dodge Durango

Not finding what you are looking for?
2002 Jeep Grand Cherokee Logo

2,273 people viewed this question

Ask a Question

Usually answered in minutes!

Top Jeep Experts

yadayada
yadayada

Level 3 Expert

76164 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22156 Answers

Kevin Daniels

Level 3 Expert

1455 Answers

Are you a Jeep Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...