P1635 Buick - CAN THIS CODE CAUSE THE TRANSMISSION TO STAY IN SECOND GEAR WHILE ON DRIVE

Question

I GOT THIS CODE AFTER REPLACING MY FUEL PUMP SO I REPLACE THE MAP SENSOR BECAUSE I SEEN IT WAS DAMAGED BUT FOR SOME REASON THE CODE STAY ON AND THE TRANSMISSION WONT SHIFT GEARS
WAS DRIVING FINE BEFORE ANY OF THIS HAPPENED!!!

Answer 1

Hi there,

This code indicates the reference voltage is out of range. Here is some info for you.

P1635 BUICK - 5-Volt Reference Circuit Low Conditions

Read more: https://www.autocodes.com/p1635_buick.html