Check engine light - ECM 2600, ECM-260B Topic is solved

[iamhives]

My son's2006 V70 2.4 NA had an intermittent Check engine light. At first thought it might had been due to a loose fuel cap but unfortunately it wasn't that easy. Now the Check engine light comes on every time.

Car seems to run fine but now I look the fuel economy seems pretty bad. I used VIDA and had a bunch of (most trivial) codes but the relevant ones seemed to ECM-2600 and ECM-260A. I cleared all codes and after two restarts got two codes only - ECM-2600 and ECM-260B and the check engine light came back. All these codes seem to point to a problem with the fuel pressure sensor (260A is signal error and 260B signal high I believe). Looks like when there is a problem with the fuel pressure sensor signal its set to a default setting which might account for the poor fuel consumption?

I took at look the fuel pressure sensor wiring and cleaned the contacts. I also cleaned the MAF (just in case). Problem endures and comes back after two restarts. Is this as simple as needing a new fuel pressure sensor or if this one of those seemingly specific errors that is caused by something else? The fact I only get these two specific codes after clearing them makes we optimistic it may actually be the fuel pressure sensor? I'm thinking that the first thing to try is replacing the sensor since a Bosch replacement is only $40. The sensor looks old and maybe original to the car (205k miles). Any other thoughts or suggestions?

[jonesg]

Thats what I'd try, VIDA is pointing you in that direction.

[iamhives]

I agree that's the most obvious thing but I can't count how many times codes seem to point directly to something only to find its a code caused as an indirect result of something else. My research also pointed to cases where it may be an oxygen sensor, cat, MAF, vacuum leak etc. I was trying to get hold of a fuel pressure guage to see if the fuel pressure is actually OK but couldn't find a loaner from anywhere locally. Hopefully this is one where the codes are pointing specifically to the right thing. Since the part is pretty cheap (and probably needs replacing as preventative maintenance) I'm OK throwing a part at it.

[jonesg]

Thats what I meant, the part is cheap enough to swap out.
If you have a schraeder valve on the rail a cheap tire pressure gauge will work, it will ruin the gauge but they only cost $2.

[iamhives]

Just realized I need to follow up with the resolution (don't you hate threads where the solution is never documented!)

I replaced the fuel pressure sensor with a new Bosch unit from FCP and the code has gone and stayed gone!