I have 2 falt numbers po715 and po420 - 2000 Chevrolet Tracker

its a transmission speed sensor or input turbine speed sensor . the sensor cant read the speed and makes it stall out.

Using Google type
OBD Codes PO715 & PO731
You can us You Tube Video to see the fix
if you know your transmission unit or model

Code 731 is for the computer thinks the ratio is wrong for first gear, and code 715 is for a problem with the input speed sensor. Code 715 could cause code 731.
Someone would need to check the sensor and possibly replace it.

P0715 Input/Turbine Speed Sensor Circuit Malfunction

The first number is a zero not an "O" P0700 is just the TCM requesting the PCM to turn on the check engine light. Because of these codes are defective transmission wiring harness, defective shift solenoids, defective transmission internal parts.

I could go on and on about Po420 code but it's easyer to tell you to go to www.po420.com and everything you want to know and then some is there. Let me know if this was helpfull..4 thumbs up !

PO715: Input/turbine speed sensor circuit malfunction.

Speed sensor
1995-1998 Odyssey, mounts on the transmission.


Hope this helps.

P0420: Calayst system efficiency below threshold (Bank no. 1)
You can clear the code by turning your engine off, locating fuse number 12 in your under hood fuse box (backup, radio 7.5A) and pulling that fuse for about 10 seconds. If the code comes back, it was not a glitch and I would have the code checked out (has to do with you catalytic converter, I believe).
Hope this helps you.

'PO715 input speed sensor open short malfunction'

charcoal canister, evaporative emissions, emissions control: P0446 indicates there s excessive vacuum in the fuel tank/evaporative emissions