How long does it take for the evap and condenser codes to stop flashing after they have been reset

60

Asked by Jan 20, 2016 at 08:39 PM about the 2001 Pontiac Bonneville SE

Question type: Maintenance & Repair

I recently had some work done and all the codes cleared and those 2 are still flashing

15 Answers

73,065

Need to have from 1/4 to 3/4 tank of gas before it will cycle, it may take a few days.

2 of 2 people found this helpful.
60

I have about a half a tank and have driven about 75 miles .

1 of 1 people found this helpful.
69,385

Rowefast is correct. Sounds like the problem wasn't fixed. What trouble codes do you have. The codes will be four digits and have the letter "P" before the numbers. For example P0302 is misfire cylinder number 2. For an EVAP system leak you may need a smoke test to find it. HTH. -Jim

60

The only code that is showing is a c1245 code. Talked to a mechanic and he said the condenser and evap codes take longer to calculate since i live in upstate NY

1 of 1 people found this helpful.
73,065

That c1245 code has to do with the ABS system. C1245 - ABS Outlet Valve Coil LR Circuit Short To Ground

2 of 2 people found this helpful.
69,385

Thanks Rowefast. That's a different computer and will not reset until the problem is fixed. Each time you shut off the ignition that computer is cleared. When you start the car up again the ABS computer runs a diagnosis of the system. Each time the problem pops up, in this case every start up, the code resets. Personally I'd visit another mechanic on this. HTH. - Jim

60

Thats just it i do not have a abs issue. i also heard it could be the tire pressure sensor which is linked to the abs

1 of 1 people found this helpful.
69,385

Just did some more digging on this. You're correct. It may be the TPMS (Tire Pressure Monitoring System). This is a new one on me! According to AllData the code must be cleared by using a scan tool that can communicate with the TPMS. Interesting, I just learned something new!! HTH. -Jim

73,065

c1245, ABS outlet valve coil LR shorted to ground. So I am taking this as something wrong with TPMS at the Left Rear wheel valve stem? What do you think Js08016?

2 of 2 people found this helpful.
69,385

Maybe not the valve stem, Rowefast. On these earlier TPMS the computer determines one of the tires is low on air by the tire RPMs. If one is off it triggers the low tire pressure light. It's called an indirect TPMS. A direct TPMS system has pressure sensors in the tires and is more accurate. In this case I believe the system uses the ABS wheel speed sensors to determine wheel speed and proper tire inflation. Most GMs of the early 2000s have the ABS sensors incorporated in the wheel bearing hub so there's no pressure sensor in the tire for the TPMS. My '02 Impala had TPMS but my '00 Grand Prix does not. I know these systems were required by the Federal Government so I'm guessing 2001 was the first year. Although my '03 S-10 doesn't have TPMS so I'll have to do some research and find out when these systems became mandatory. Maybe like seat belts and other safety features truck requirements came later. So back to the poster's question I'm now thinking the same as you. It's the left rear hub assembly or the wiring going to it. I'm glad I jumped on this thread. It's been very educational!! HTH. -Jim

60

ok i have since replaced the egr valve and thermostat . how long you think before the c and evap clear . i have no codes showing and cel is not on

1 of 1 people found this helpful.
69,385

Drive normally for a few days with the gas tank between 3/4 and 1/4 full. No more and no less. This will allow the computer to run the diagnostics on all the engine systems and set the readiness monitors. The EVAP system is the hardest readiness monitor to get to set especially if you're in a cold climate. If after about a week or so you don't have a check engine light you should be good to go. To pass an emissions inspection your '01 model can have 1, but only 1, readiness monitor not set. HTH. -Jim

60

I did not have any codes prior to replacing the egr valve. i replaced it yesterday and as i was driving today the cel came on and the scanner displayed the p0401 insufficient egr flow. Any ideas . Thanks

1 of 1 people found this helpful.
69,385

Why did you replace the EGR valve if it wasn't setting a trouble code? If it works, don't fix it! Put the old EGR valve back on and clear the computer. But don't plug the EGR valve in until after you've cleared the computer and shut off the ignition. This way the computer can learn the closed position of the EGR valve. HTH. -Jim

60

I did that now just have to hope the computer reads all monitors

1 of 1 people found this helpful.

Your Answer

Bonneville

Looking for a Used Bonneville in your area?

CarGurus has 516 nationwide Bonneville listings starting at $1,799.

ZIP:

Pontiac Bonneville Experts

  • #1
    ticklemedaly
    Reputation
    390
  • #2
    Js08016
    Reputation
    360
  • #2
    dandyoun
    Reputation
    360
View All

Related Models For Sale

Used Pontiac Grand Prix
39 Great Deals out of 2,724 listings starting at $1,200
Used Chevrolet Impala
598 Great Deals out of 34,726 listings starting at $1,250
Used Chevrolet Monte Carlo
14 Great Deals out of 1,353 listings starting at $995
Used Pontiac Firebird
13 Great Deals out of 812 listings starting at $1,900
Used Pontiac Grand Am
1,082 listings starting at $1,599
Used Buick LeSabre
23 Great Deals out of 1,890 listings starting at $1,588
Used Chevrolet Camaro
420 Great Deals out of 31,911 listings starting at $2,395
Used Chevrolet Malibu
1,258 Great Deals out of 77,877 listings starting at $1,500
Used Ford Mustang
767 Great Deals out of 42,668 listings starting at $1,300

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.