2006 V70R (automatic) throwing 19 error codes

[abscate]

No apology needed, was just trying to get more eyeballs on it.

After you get Volvo codes and descriptions read.....

These cars need a solid 12V supply, so if your battery is more than 5 years old, swap a newer one in or get a new one in, regardless of test.

Fuel pressure problems will generate all those running errors, so getting the fuel pressure measured at the rail would be useful. The weak part of the P2 system is the pump electronic module OR PEM. Mine only lasted 13 years. Expensive part, easy R/R

[chrism]

With that many codes showing up within such a short time span I wouldn’t spend a dime on it until I unlocked and reseated both the ECM and TCM. Then if the codes persist start looking elsewhere.

[oragex]

Need to start looking at these issues slowly and take your time - don't let a garage or worse Volvo, 'try' things (only sure result will be your account will drain)

How many miles?

I'm thinking first electrical grounds, there is one behind the engine, www.youtube.com/watch?v=tHLZpq7lNRk

Then maybe look at the DEM (google up), look for corrosion on the silver plate

Keep in touch here for any questions, I'd recommend not replacing anything without asking for advice in the first place

[mrbrian200]

[youtube][/youtube]Problems with the +5v VREF will wreak havoc with the entire ball of wax, I could imagine a scenerio where everything else listed there amounts to a cascade failure pointing back to the loss/improper +5V VREF. This doesn't necessarily indicate a failed ECM. The ECM gets constant unswitched power for much of the data/memory/CPU/monitoring sections. The processor simply goes to low power mode/sleep when the car is off. However, there is switched 12V that powers some 'passive circuits' in there including I believe the regulated power supply for VREF that goes out to various engine sensors whose power source comes into the ECU through different wires (likely to isolate the rather sensitive CPU/data processing sections from electrical interference). Which is why I'm leaning toward an issue in the power/ground distribution. If it were my car, that code indicating a problem with the +5v VREF would absolutely be the first area/line to investigate first.

**passive in the sense that the output of the internal +5v VREF voltage supply regulator may be monitored by the CPU, but not controlled by the CPU, and this regulator's power/ground paths aren't necessarily shared on the same wires coming into the ECM that power the CPU. In effect it's a 'standalone' circuit.