1999 Volvo S70 P1057, P0722, P0717

[plumberman060]

Update:

Following these instructions (https://www.matthewsvolvosite.com/forums ... =1&t=29930), I disassembled, cleaned, and reassembled that PNP switch.

Afterwards, I went to AutoZone and now only have three codes, viz.,

P1057
P0717 (Input turbine speed sensor.)
P1057

I read somewhere today that P1057 is simply the TCM telling the ECM to turn on the MIL. (Cannot remember were; and forgot to save the link. )

I also read that P1618 = Volvo code ECM-530D. I did not have a P1618. But when I had Volvo diagnose the issue, I DID have a ECM-530D with the added information of TCM 00087.

Just trying to give any info I can in hopes that someone will recognize the problem.

Finally, is it *just* possible that I need to drive it for 200 miles or so to let the ECM or TCM re-learn patterns/clear codes?

Similarly, would changing the Wheel Speed Sensors affect this? Would changing the VO-8017 CV Axle Shaft affect this?

What about if someone put in a different engine or transmission? (And how would I tell? IE: is there a way to discover if the Engine, Transmission, ECM, and TCM all are compatible by looking at Serial Numbers?)

That's it for now. Thank you for all the excellent guides.

[plumberman060]

So I just read a post where a mechanic had a similar issue. CEL + Flashing Arrow on a car that had been sitting a while. He removed the ECM and cleaned it, and, voila, both were gone.

Since I haven't had much luck yet, I thought I'd try it.

Nada. It didn't work for me.

In fact, behind the black plastic container for the ECM and TCM, I found this:

It was plugged in. I unplugged it and read 13.4 volts +/-.

When I checked the instrument panel I had a new light that looked like the radiator. It's the light first from the left. Directly on the right of where the Flashing Arrow light goes. (See Picture)

Any ideas what that is? Why would someone solder it together? That is, what would it accomplish?

Thanks

[abscate]

That's your coolant level sensor. It's inductive and fits up into the coolant reservoir

It's the first line of defense from a. 2000 usd engine overhaul.

I would not drive until it is replaced

[plumberman060]

Got it. Will take care of it. Thank you.

[JeffHicks]

For what little it's worth, with the dealer finding "column lock faulty" and your SRS light staying on, I'd bet that somebody replaced the ignition switch cylinder, but didn't disconnect the battery before removing the steering wheel. The dealer SHOULD have cleared that code for you.

Sorry for your trouble. Sounds like your car was thoroughly screwed up by some hillbilly before you bought it. I'll keep looking and thinking about this one. I've got a 99 V70, so we're driving pretty similar cars...

[plumberman060]

Thank you for the input.

I went back to the dealer, and, thankfully, they turned off the SRS with no charge.

And thank you for the condolences....I'm about to lose my mind trying to solve this!

[plumberman060]

I just read that the VSS requires 12 volts on the supply side. Can anyone confirm? (I've got voltage that fluctuates between 6.6 and 7.4)

Thanks

[plumberman060]

With the Key in the ignition turned on, here are some voltage readings I get.

Vehicle Speed Sensor (one test lead on each prong of supply plug): 7.69 volts.

Engine Speed Sensor (ibid) : 7.66 volts.

Thought maybe this might help someone decipher this problem.