P1491 Honda -

Question

Hello there,
I have done the following:
- cleaned up the EGR port in the engine in an automotive shop; when it did not help, I verified myself that the port was absolutely clear
- replaced the EGR valve with a new one
Both these things did not help. Now, when I clear the code, I drive unlimited mileage without the "Check engine" light coming on. The moment I shut the engine and restart it, the light comes on.
Any ideas?

Answer 1

Hi there,

This could be due to possible wiring issues. Here is some more info for you.

P1491 HONDA - Exhaust Gas Recirculation Valve Insufficient Lift

Read more: https://www.autocodes.com/p1491_honda.html