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Thread: Car is Running But A Bunch of Error Inc Misfire (P1641 P0125 P0300 P0340 P1300) Reply to Thread
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Topic Review (Newest First)
10-15-2016 01:54 PM
Cloves So I figured out what was causing my issue. As was mentioned in another forum fuse 38 gives power to something the panel calls lambda, assume lamba sensor. This supplies the preheater sensor with heat warmup.

On the road last week I swapped fog light bulbs without turning the lights off. Yes dumb. Anyways I popped a 15amp fuse from the fuse box in the front of the engine. I then went and pulled a fuse from the inside of the car. It must have been late, but instead of pulling the "S" for spare I pulled the lambda fuse. Didn't get a code after I did that and well apparently this was the culprit. I will update the thread if that changes.

Thanks for the reply guys, sometimes that extra brain helps lol!
10-13-2016 11:17 AM
Car is Running But A Bunch of Error Inc Misfire (P1641 P0125 P0300 P0340 P1300)

So yeah its not even Christmas and saab I guess is in a giving mode. Last month I had a P0455 EVAP serious leak in system. Last night I had the check engine flash on me which indicated a misfire catalyst damaging.

So today I put in a loaner EVAP control valve and reset the DIC. P0455 seems to be fixed.

Took the car out for a ride and got a slew of codes popping up. I can see data from the Tech 2 while driving. (screen shots posted below while idle). Car doesn't seem to be getting into closed loop.

P1641(1) Fuel Pump Relay. No Voltage to Fuel Pump and 02s preheating
P0125(5) Excessive Time to Ener Closed Loop Fuel Control
P0300(0) Random Misfire Detected
P0340(0) Random Misfire Detected
P1300(0) Random Misfire Detected. Catalyst Damaging

The car runs and it doesn't feel rough. The tech2 doesn't say the car is in limp mode. I can't understand if there is no voltage from p1641 error, wouldnt the car not run?

Anyways anyone have insight on what to start looking at. Its most likely 1 element causing all these errors.

I have NGK plugs in the car. Car has 189k and plugs got changed 42k ago. Saw misfires on 3 and 4 and you can see in the Tech 2 screen shots.

Suspecting dtc, plugs which have 40k, or o2 sensors. Anyone have any thoughts on which path to take here?

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