"Heater Control Circuit Low" P0031 - Nissan Forum
B15 2000-2006 2000+ Sentra including 2002+ SE-R and SpecV

 
LinkBack Thread Tools Display Modes
#1 Old Jan 12th, 2005, 03:03 PM
NissanForums Newbie
 
Join Date: Jan 2005
Location: NH Seacoast
Posts: 7
"Heater Control Circuit Low" P0031

Not sure if anyone can help me with this. I have a 2002 Sentra SE-R and my check engine soon light came on. So I went to autozone and did the free diagnostic test. They said the issue # was P0031 and "Heater control circuit low". Has anyone come across the same problem and if so, what does it mean? Thanks for your help.
Sponsored Links
Advertisement
 
#2 Old Jan 12th, 2005, 04:39 PM
Post Freak
 
lshadoff's Avatar
 
Join Date: Nov 2002
Posts: 1,818
P0031 is a malfunction in the first Oxygen Sensor Heater. The ECU detected a voltage which is too low.

This is due to either a bad connection or a defective O2 sensor.

Lew
#3 Old Jan 13th, 2005, 08:43 AM
NissanForums Newbie
 
Join Date: Jan 2005
Location: NH Seacoast
Posts: 7
Perfect! Thanks for your help. So the 02 sensor basically monitors the air going to the engine...
#4 Old Jan 13th, 2005, 08:51 AM
NissanForums Newbie
 
Join Date: Jan 2005
Location: NH Seacoast
Posts: 7
Actually, I take that back. Does is monitor the exhaust?
#5 Old Jan 13th, 2005, 08:53 AM
Post Freak
 
lshadoff's Avatar
 
Join Date: Nov 2002
Posts: 1,818
Quote:
Originally Posted by pscd27
Perfect! Thanks for your help. So the 02 sensor basically monitors the air going to the engine...
The O2 sensor is in the exhaust, and measures unconsumed oxygen. This is related to the air-fuel ratio going into the cylinders.

The Mass Airflow Meter (MAF) measures the air going into the engine.

Lew
Reply

  Nissan Forum > Sentra, Pulsar, NX, B14 200SX > B15 2000-2006

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Nissan Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



  Similar Threads
Thread Thread Starter Forum Replies Last Post
OBD II Code Chart no1see2me QG18 1.8L Engine 9 Jul 26th, 2009 02:26 PM

Posting Rules  
You may post new threads
You may 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 On
Pingbacks are On
Refbacks are On