ShootyScooty
New Member
- Joined
- June 13, 2024
- Messages
- 2
- Reaction score
- 0
- City, State
- Rochester, NY
- Year, Model & Trim Level
- 2017 PIU
Currently have P0420, P0430, and P0456
246,000 miles
Originally replaced both downstream O2 sensors which didn't help.
Brought the car to a shop for diag, they diagnosed two bad cats. Bought and replaced the cats, cleared the codes, and took it through multiple driving cycles. Every time, before I hit the 100 mile cap, the light comes back on with the same 3 codes.
What could be going on here?? Bad connection between the sensors and the ECU? If so, how would I diag that?
Pls let me know what I should diag and what your usual steps are, if you have em.
GREATLY appreciated
246,000 miles
Originally replaced both downstream O2 sensors which didn't help.
Brought the car to a shop for diag, they diagnosed two bad cats. Bought and replaced the cats, cleared the codes, and took it through multiple driving cycles. Every time, before I hit the 100 mile cap, the light comes back on with the same 3 codes.
What could be going on here?? Bad connection between the sensors and the ECU? If so, how would I diag that?
Pls let me know what I should diag and what your usual steps are, if you have em.
GREATLY appreciated
