1997 Ford Probe 4-Cylinder with Codes P0133, P1652, P0400, P1410, and P0171 - Troubleshooting Guide
My daughter's 1997 Ford Probe 4-cylinder vehicle is experiencing intermittent rough idle, stalling, and a lack of power during acceleration. After visiting AutoZone, we retrieved the following diagnostic trouble codes: P0133, P1652, P0400, P1410, and P0171. The technician noted that both P0133 and P0171 are related to the oxygen (O2) sensor. While I plan to start with replacing the upstream O2 sensor, I'm seeking expert advice on how to prioritize and address these codes effectively in a vehicle of this age. What is the recommended troubleshooting sequence for these specific codes? Should I focus on the O2 sensor first, or are there other system components that need attention before moving forward?
Starting with the upstream O2 sensor is a solid approach, especially given the vehicle's age. Recommend replacing it with an OEM (original equipment manufacturer) sensor from the dealership—aftermarket sensors may not provide consistent performance or compatibility. For P0171, begin by checking for vacuum leaks, including components in the PCV system and verify fuel pressure levels. Once these are ruled out, proceed to address the remaining codes: P1652, P0400, and P1410 in that order. If further assistance is needed after repairs, feel free to update with your progress. Good luck!