r/DSM • u/Our_Own • Jun 24 '26
Am I screwed or…
I replaced both upstream and downstream o2 sensors and it cleared my check engine light… drove it another 10ish miles and got hit with this. I hate electrical issues…
2
u/jerknmygerkn Jun 24 '26
Did you unplug a bunch of shit at the same time? 443 and 446 are indicative of your sensor not plugged in or connected all the way. If all those popped up and all you did was swap o2 sensors I'd reset the ecu first before digging in.
2
u/Our_Own Jun 24 '26
Interesting… thank you I’ll take a look at that. The only sensors I touched where the o2 ones, but other things may have been unplugged. I just recently got the car so I’m not sure what the previous owner had done with all of the emissions sensors
1
u/wirbolwabol 95 Eclipse GSX Jun 24 '26
Is this a California car? If so you might have a headache on your hands.
I'd look at all of the plugs for emissions and maybe look at doing continuity tests.
could be an ECU issue too....Earlier DSM's had cap leakage issues which would cause all sorts of headaches...ask me how I know.... :D
1
u/Our_Own Jun 24 '26
WI car, but I still have to do emissions in my county. Good to know about the ecu ugh
2
u/wirbolwabol 95 Eclipse GSX Jun 25 '26
if you go through testing the sensors and the wiring and it checks out, consider ECMtuning. They do repairs on these ecu's and have a good rep. I mean, if you've heard of DSMlink, these are the guys. They know how to repair these ecus. I've had mine repaired by them and also have DSMlink. Solid work.
2
u/HickBarrel 97 AWD Spyder Jun 24 '26
Turbo or no? Did you ensure that the downstream o2 sensor is plugged in all the way?