Hello there , please give some advise onto fixing the P0091 code
2018 caddy xr5
all kinds lights came on my wife car when she came home . I used the scan tool Blue Driver recommended by Scotty to check the codes . Is this a easy fix ,like just a sensor . TY
Thank you for the replies. Yes it still should be under warranty. it is no yet 3 years. she is under 35000 miles. I must admit i do forget about warranties because none of my cars are ever new . I would rather have the wife in a new vehicle then myself.
PCM has low voltage, check connections at the battery first, then start to get into the detective work at finding why the sensor is getting low voltage. You may just have to replace the PCM
See below: since it’s a 2018 model year Cadillac, it should still be under the powertrain warranty and should have the dealer check it out.
https://www.obd-codes.com/p0091
