08 grand prix with 3.8 engine throwing 9 codes
#1
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.
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.
#2
Senior Member
True Car Nut
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?
#3
Senior Member
A mouse or other invader may have chewed on some tasty wiring .
#6
Senior Member
True Car Nut
Florida not bad, unless it got flooded.
#7
Senior Member
True Car Nut
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.
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.
#8
Senior Member
Posts like a Supercharger
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.
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