Pontiac When starting new posts, please specify YEAR, MAKE, MODEL, ENGINE type, and whatever modifications you have made.

08 grand prix with 3.8 engine throwing 9 codes

Thread Tools
 
Search this Thread
 
Old Dec 28, 2018 | 09:31 PM
  #1  
traelar's Avatar
Thread Starter
Junior Member
 
Joined: Dec 2018
Posts: 4
Likes: 0
traelar is on a distinguished road
Default 08 grand prix with 3.8 engine throwing 9 codes

So i recently had a fuse blow and caused a no start, replaced the fuse car started and ran rough ,it turned out the ignition control module was bad, replaced that put new plugs and wires in then the car ran great no issues,,
Well i recently moved the car sat about a month since my girlfriend was on maternity leave and we only needed one vehicle at the time.
After trying to start it the car is throwing 9 codes P0201 Through P0206 Open Circuit for all cylinders, P0443 Evap Emissions Solenoid Control Circuit P0030 P0036 Heater control circuit sensor 1 & 2
Car cranks, checked all fuses, switched around some relays no luck... Everything seems to lean toward replacing the PCM.. any thoughts? really need to get this vehicle going until tax season so i can buy something new.
Reply
Old Dec 29, 2018 | 02:03 AM
  #2  
CathedralCub's Avatar
Senior Member


True Car Nut
 
Joined: Feb 2015
Posts: 6,851
Likes: 1,015
From: Earth
CathedralCub is a splendid one to beholdCathedralCub is a splendid one to beholdCathedralCub is a splendid one to beholdCathedralCub is a splendid one to beholdCathedralCub is a splendid one to beholdCathedralCub is a splendid one to beholdCathedralCub is a splendid one to behold
Default

Originally Posted by traelar
the car sat about a month
Originally Posted by traelar
the car is throwing 9 codes P0201 Through P0206 Open Circuit for all cylinders, P0443 Evap Emissions Solenoid Control Circuit P0030 P0036 Heater control circuit sensor 1 & 2
Car cranks, checked all fuses, switched around some relays no luck
Originally Posted by traelar
any thoughts?
Need to be a little more detailed with these code definitions:
P0030 Heated O2 sensor circuit failure Bank 1 Sensor 1
P0036 Heated O2 sensor circuit failure Bank 1 Sensor 2
P0201 Injector circuit malfunction Cylinder 1
P0202 Injector circuit malfunction Cylinder 2
P0203 Injector circuit malfunction Cylinder 3
P0204 Injector circuit malfunction Cylinder 4
P0205 Injector circuit malfunction Cylinder 5
P0206 Injector circuit malfunction Cylinder 6
P0443 Evaporative purge control valve circuit failure

I'd be surprised that the PCM went out just from sitting. My first thought: an animal got in there and chewed something vital.

How many miles on the car?

What part of the world does it live in?
Reply
Old Dec 29, 2018 | 02:43 AM
  #3  
carfixer007's Avatar
Senior Member


True Car Nut
 
Joined: Dec 2018
Posts: 3,243
Likes: 1,602
From: Flint, MI USA
carfixer007 is on a distinguished road
Default

A mouse or other invader may have chewed on some tasty wiring .
Reply
Old Dec 29, 2018 | 11:20 AM
  #4  
traelar's Avatar
Thread Starter
Junior Member
 
Joined: Dec 2018
Posts: 4
Likes: 0
traelar is on a distinguished road
Default


Reply
Old Dec 29, 2018 | 11:21 AM
  #5  
traelar's Avatar
Thread Starter
Junior Member
 
Joined: Dec 2018
Posts: 4
Likes: 0
traelar is on a distinguished road
Default

I was kind of thinking that also, the has 187k on it and i've had it for 2 years in wisconsin it came from florida.
Reply
Old Dec 30, 2018 | 12:12 AM
  #6  
CathedralCub's Avatar
Senior Member


True Car Nut
 
Joined: Feb 2015
Posts: 6,851
Likes: 1,015
From: Earth
CathedralCub is a splendid one to beholdCathedralCub is a splendid one to beholdCathedralCub is a splendid one to beholdCathedralCub is a splendid one to beholdCathedralCub is a splendid one to beholdCathedralCub is a splendid one to beholdCathedralCub is a splendid one to behold
Default

Florida not bad, unless it got flooded.
Reply
Old Dec 30, 2018 | 07:07 PM
  #7  
rjolly87's Avatar
Senior Member
True Car Nut
 
Joined: Jun 2003
Posts: 7,270
Likes: 465
From: Las Cruces, NM
rjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant future
Default

I would start on this by checking for power to the injectors. As I understand it, the injectors are all fed from either all fed from a single power source, or fed in two banks. Power is there all the time from what I understand.

I would unplug the injectors and check for power at the harness using a test light grounded straight to the battery.

Also a diagram to track down where the o2 sensor heaters feed from would likely be helpful at this point too, but I don't have anything like that for this application.

I would be heavily scrutinizing if not straight swapping your ignition power feed, making sure there is power where power should be.
Reply
Old Dec 30, 2018 | 07:19 PM
  #8  
dpieroni3's Avatar
Senior Member
Posts like a Supercharger
 
Joined: Feb 2015
Posts: 185
Likes: 50
dpieroni3 is on a distinguished road
Default

check the wire harness at the pcm in the air box and along the fuel rails.Seem to find most of the rodent damage in those area'* when a vehicle sits. Just a quick thought in passing. Hoped you find this helpful.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Danthurs
OBD-II Trouble Shooting
0
Sep 23, 2009 10:32 PM
Danthurs
Specifications and General Information
0
Jan 13, 2009 02:53 PM
Foghorn
1992-1999
0
Jan 24, 2004 06:39 PM




All times are GMT -4. The time now is 06:58 AM.