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03 micra codes po37 and po138

Printed From: Club Nissan
Category: Model Specific
Forum Name: Micra
Forum Discription: A forum for Micra Owners
URL: http://www.forum.clubnissan.co.uk/forum_posts.asp?TID=4874
Printed Date: 18 May 2024 at 09:46
Software Version: Web Wiz Forums 10.11 - http://www.webwizforums.com


Topic: 03 micra codes po37 and po138
Posted By: robbie
Subject: 03 micra codes po37 and po138
Date Posted: 22 October 2011 at 16:17
Hi all ive got two codes relating to the o2 sensor and its heating circuit car runs fine but eml light comes on anyone have any idea what i need to replace and where it is is it just the 02 sensor or is there another sensor somewhere relating to this any help would be appreciated.



Replies:
Posted By: Guests
Date Posted: 22 October 2011 at 19:56

what reg ? what engine ? what are the correct error codes ??

later cars have 2 o2 sensors 1 one in the manifold (pre cat) and on just after the cat (post cat) from the error codes it likely to be the rear one thats faulty (worth checking the plugs and wiring to the sensor first tho)

If you going to change the sensor(s) get either ntk or genuine nissan ones cheap wideband sensors are a pain in the rear

Just to add if you leave the sensors your more than likely reck the cat and the car will end up running ruff as the ecu will over/under fuel



Posted By: robbie
Date Posted: 23 October 2011 at 12:43
Originally posted by flash22 flash22 wrote:

what reg ? what engine ? what are the correct error codes ??

later cars have 2 o2 sensors 1 one in the manifold (pre cat) and on just after the cat (post cat) from the error codes it likely to be the rear one thats faulty (worth checking the plugs and wiring to the sensor first tho)

If you going to change the sensor(s) get either ntk or genuine nissan ones cheap wideband sensors are a pain in the rear

Just to add if you leave the sensors your more than likely reck the cat and the car will end up running ruff as the ecu will over/under fuel



Posted By: robbie
Date Posted: 23 October 2011 at 12:47
yeah its a 53 plate 1.2 s and the error codes are p0138 o2 sensor low voltage circuit and p037 ho2 heater voltage i can see the front one in the manifold but will have a look for a second one how difficult are they to change never done one but im handy with the spanners.



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