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2003 Lincoln Navigator P0743 P0755 P1747 P0141 P0160 - Post-Cat Removal Exhaust Issue

Model: 2003 Lincoln Navigator Fault Code: P0141 Posted: 2021-09-09 18:22

I own a 2003 Lincoln Navigator. The catalytic converters were stolen, and I recently installed new exhaust pipes without catalytic converters, along with new oxygen (O2) sensors. The vehicle now runs but struggles to move. OBD-II diagnostic codes detected include P0743, P0755, P1747, P0141, and P0161. I'm unsure how to prioritize troubleshooting steps. Any guidance on diagnosing these issues would be greatly appreciated.

Related fault codes

P0141P0161P0743P0755P1747

Comments (1)

Anonymous 2021-09-09 21:03

I recommend starting by researching the specific OBD-II codes at trusted sources like https://www.obd-codes.com/trouble_codes/. The P07xx and P1747 codes are typically related to transmission issues, while the P01xx codes point to oxygen sensor problems. Based on this, it's possible that removing the catalytic converters or installing illegal exhaust components damaged wiring in the exhaust system area. Carefully inspect all wiring harnesses, connectors, and ground connections for any physical damage. Additionally, I strongly advise reinstalling the original catalytic converters to ensure compliance with road safety and emissions regulations.