Emissions code P0031 P0032

Tiny
DANSTADELMAN
  • MEMBER
  • 2001 JEEP GRAND CHEROKEE
  • 150,000 MILES
I have a 2001 jeep grand Cherokee limited 60th anniversary edition v8
I just got check engine light when I went for inspection sticker
I got emission codes p0031, p0032
I know nothing about vehicles
can someone help please?
if there is a fix please explain it to me like I was 4 years old
I don't know mechanic lingo
thank you!
Monday, May 6th, 2013 AT 6:26 PM

4 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,796 POSTS
SYMPTOM
P0031-O2 SENSOR HEATER CIRCUIT LOW 1/1

WHEN MONITORED
Battery voltage above 10.6 volts, ECT below a certain TEMP but within a set Temperature difference of Battery temp sensor.

SET CONDITION
If voltage is lower than a specified voltage at start of test.

POSSIBLE CAUSES
Fused ignition feed circuit open
Heater control circuit open
Heater element check
Intermittent condition
PCM

this is the flow chart for the codes. It most likely has a sensor that has a shorted heater, blown fuse or wiring issue

i had to generalize since you provided no engine size

Roy
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Monday, May 6th, 2013 AT 6:33 PM
Tiny
DANSTADELMAN
  • MEMBER
  • 3 POSTS
Sorry!
4.7 liter 8 cylinder engine.
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Monday, May 6th, 2013 AT 6:40 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,796 POSTS
You need a shop to track it down as there is 4 sensors which need to be checked. Find a good independent repair shop to help you

roy
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Monday, May 6th, 2013 AT 6:49 PM
Tiny
DANSTADELMAN
  • MEMBER
  • 3 POSTS
I would if it was affordable. I am disabled and can not afford $45 per hour to diagnose the problem(that's the lowest price I was quoted) but thanks anyways for your effort. God bless. Have a great day
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Monday, May 6th, 2013 AT 6:53 PM

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