mlanigan

My engine light has been on for a month or so now and my gas milage has gone down by about a 100 miles per tank. I check the ECU code and get an 0706 & 0304. Undefined and a knock sensor. I am positvie it's an 0706. I found this link http://www.jimbennett.net/ECU.htm that shows it as being Fuel Injection System -Control Fault, but I think its for a Pathfinder, doesn't really say. Sounds like maybe the 06 is false, and should be an 07 with the bad gas milage. Any thoughts would be appreciated!

95 Maxima SE

hasei

iTrader: (5)

100 miles per tank? Sounds to me almost like fuel leaking somewhere.....

njmaxseltd

iTrader: (19)

According to the Haynes shop manual, 0706 is fuel injection system lean or rich (right bank).

Change your fuel filter and run a bottle or two of Techron through. If that doesn't clear things up you may have a fuel pressure regulator gone bad.

mlanigan

Thanks, I will replace the filter. Do you think the 0304 (knock Sensor) error that follows 0706, is a result of the poor fuel problem? The sensor measured 4.9k ohms to 5.2k ohms on pin2.

ManualMaxima

iTrader: (10)

knock sensor gone wrrong will cause bad gass milage and major hp losses. What type fuel are you running?

mlanigan

I'm running Unleaded 89 octane fuel. I don't have major HP loss, but bad gas milage. Used to go around 430 miles per tank, and now it's around 330.