I have a '96 SL-1 with the Service Engine Soon light on. I bought a cheap code reader and it comes up with 1406. The book with the reader says that is "Differential Pressure Feedback EGR (DPFE) Sensor Downstream Hose Off or Plugged". Which do they consider downstream, the engine side or the exhaust side? The hoses appear fine. I do have a rusty exhaust pipe that is leaking, though. Could the reduced backpressure cause this code? If replacing the pipe will fix it problem, I'll hold off on fooling with the EGR (since it's about $150 and I have to fix the pipe anyways). Thanks, Buster
- posted
20 years ago