I have a 2001 Elantra GLS, 160,000 miles. These two codes come up on ny diagnostic tool.
P0422
Main catalyst efficiency below threshold (bank 1)
No symptoms at all
P1529
Customer snapshot request
Symptoms
Car will shift hard into third gear and stay there without shifting at all regardless of speed. Shutting the car off and restarting will sometimes fix, but only temporary. When car runs normal, it runs fine and shifts good. At speeds around 40 it seems to kick back and forth between 3rd and overdrive as if it can't decide where to be. Tried replacing speed sensor, but new sensor did not fix problem.
Fuel Sys 1 CL
Fuel Sys 2 NA
Calc Load 18.4
ECT 201
STFT B1 0.0
LTFT B1 -2.3
MAP 8.6
Eng RPM 3351
Veh Speed 22
EV flashing
O flashing
Sent from AutoGuide.com App
P0422
Main catalyst efficiency below threshold (bank 1)
No symptoms at all
P1529
Customer snapshot request
Symptoms
Car will shift hard into third gear and stay there without shifting at all regardless of speed. Shutting the car off and restarting will sometimes fix, but only temporary. When car runs normal, it runs fine and shifts good. At speeds around 40 it seems to kick back and forth between 3rd and overdrive as if it can't decide where to be. Tried replacing speed sensor, but new sensor did not fix problem.
Fuel Sys 1 CL
Fuel Sys 2 NA
Calc Load 18.4
ECT 201
STFT B1 0.0
LTFT B1 -2.3
MAP 8.6
Eng RPM 3351
Veh Speed 22
EV flashing
O flashing
Sent from AutoGuide.com App