Go Back   Jeep Garage - Jeep Forum > Jeep Platform Discussion > Grand Cherokee - WJ > Troubleshooting/Problems

Join Jeep Garage Today
Reply
 
Thread Tools Display Modes
 
  #1  
Old 05-26-2010, 06:47 PM
Member
My Jeep: 2002 4.0L WJ
 
Join Date: Feb 2010
Location: Barrie Ontario Canada
Posts: 40
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 1776
jeepnuts is on a distinguished road
Unhappy P0118 code

Hi Guys

Ok so i have this fault code and most sites say it is the colant temp sensor.
But my coolant temp gauge is rising way above 100c and my electic fan is not coming on (the fan works i fed power direct from battery and fan came on)

so my question i suppose is what the hell is causing my fan not to work when the temp rises above !00c and keeps rising any ideas
__________________

__________________
Reply With Quote
  #2  
Old 05-27-2010, 09:49 AM
michael.wellejus's Avatar
Member
My Jeep: 1989 4.0L MJ
 
Join Date: May 2010
Location: Denmark, Europe
Posts: 14
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 1667
michael.wellejus is on a distinguished road
Re: P0118 code

hi there.
check the radiator fan relay in the pdc (power distribution center). the location of the relay is displayed on the back of the cover. try and place a jumperwire to bypass the relay and se if the fan comes on, if it works try and replace the relay with another one i.ex a/c clutch relay. it could be a faulty relay. The code p0118 could also mean that the wires from the pcm to the ect is bad, hope it helps.
best regards
michael
__________________

__________________
Reply With Quote
  #3  
Old 05-27-2010, 08:25 PM
Member
My Jeep: 2002 4.0L WJ
 
Join Date: Feb 2010
Location: Barrie Ontario Canada
Posts: 40
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 1776
jeepnuts is on a distinguished road
Re: P0118 code

thanks for the reply michael I have already checked the fan relay and it is good.
I found on tinternet two possible causes
1. temp sender unit mounted into thermostat housing
2. Hi Low relay mounted behind front bumper under headlight.

the later is awkwardand timely repair.
hopeing for advice as to which is most likely to be at fault.
__________________
Reply With Quote
  #4  
Old 06-02-2010, 03:06 PM
michael.wellejus's Avatar
Member
My Jeep: 1989 4.0L MJ
 
Join Date: May 2010
Location: Denmark, Europe
Posts: 14
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 1667
michael.wellejus is on a distinguished road
Re: P0118 code

sorry about the late answer. The code P0118 sensor circuit high, means that either the wires are disconnected, or the sensor is "open", or the wires are shorted to battery. Most likely it's the sensor or a broken wire. If you pull of the connector at the ect the pcm will set the same p code. What worries me is that the engine fan should come on if the connector at the ect is disconnected, and aparently it doesn't, so I think there could be 2 faults...
__________________
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
P0051 trouble code on 04 GC mrjaydeeone Troubleshooting/Problems Discussion 11 11-03-2010 06:59 AM
Code Robert Palmer Trouble Shooting/Problems/Service 14 05-17-2010 11:48 PM
code p 0720 violant00 Troubleshooting/Problems 6 05-15-2010 09:27 PM
p1391 code am2owens Troubleshooting/Problems Discussion 3 03-03-2010 12:34 AM
The Cause of My P0868 Code Robert Palmer Grand Cherokee - WK 10 09-29-2009 08:15 PM

Powered by vBadvanced CMPS v3.2.3

All times are GMT -5. The time now is 08:42 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Copyright 2012 - JeepGarage.Org
The Jeep Grand Cherokee Owners Community

JeepGarage.org is in no way associated with or endorsed by Chrysler Group LLC.