P0406 code for 1994 buick lesabre
DTC P0406 Exhaust Gas Recirculation Sensor A Circuit High.
You in fact do, need to replace the EGR valve. P0406 is actually EGR
position sensor high code. Which means the PCM recieved a egr position
sensor signal greater than 4.89 volts. For some reason the the egr on
the 05 minivan had a high failure rate.
The best way to get at
the lower bolt after you remove the upper bolt and the two 8mm tube
screws, pry the valve rearward. This allows you to get a socket on the
Hope helps (remember to rate and comment this).
Sep 19, 2010 |
1994 Buick LeSabre