new s70 owner with 3 engine codes

Naebue · Post by **Naebue** » 08 Jan 2011, 01:29

2000 S70 SE with roughly 168,000 miles.
Most recent repair (1/4/11) was a rebuilt transmission through AAMCO after sitting for about 8-12 months.
Lights on: Check Engine and ABS (Service comes on, then goes away after starting)
Codes showing: P0327, P0500, P1671
I got the codes from an Auto Zone diagnostic.

After doing some research, P0327 - Knock Sensor 1 Circuit Low Input (Bank1), P0500 - Vehicle Speed Sensor, and P1671 - has to do with the VVT system / camshaft reset valve / signal too high or too low.

I'll be honest, I have no idea where to go from here or what to do to repair these codes. Anyone have these same issues or able to point me in the direction for repairs?

Thank you in advance,
~Eddie

Post by **JRL** » 08 Jan 2011, 06:48

After doing some research, P0327 - Knock Sensor 1 Circuit Low Input (Bank1), P0500 - Vehicle Speed Sensor, and P1671 - has to do with the VVT system / camshaft reset valve / signal too high or too low.

You have sort of answered your own question

You may need a knock sensor
You may need a camshaft reset valve
The speed sensor can be several things

What is the condition and the level of your oil?
Low oil level or very dirty oil can throw the camshaft code
I have a feeling most, if not all of these codes are from a result of it sitting for a year, things (sensors inside your engine and engine compartment are dirty and/or gummed up!
(and what kind of gas are you running and how long have you driven it since that "year of sitting")?
You may have bad gas in there

Klausc · Post by **Klausc** » 08 Jan 2011, 09:36

It's time to get a good code reader, either hand held or lap top(better), so you can clear the codes and see what stays on.

Fill up with a tank of premium gasoline and run the engine above 2,000 rpm for at least 30 minutes. I like to run in 2nd or 3rd which will clean off the exhaust valves.
Make sure you use synthetic oil and a good oil filter (Mann or OEM). The car is old enough to have developed cracking vacuum lines and a coated PTC nipple - search on cleaning PTC.

Post by **jimmy57** » 08 Jan 2011, 13:43

The Auto Zone code reader would not give you ABS codes and the VSS code is likely due to ABS having a problem.
AAmco guys may have unplugged an ABS wheel speed sensor connector or broken a wire doing the transmission. Same for the knock sensor. The axles have to be removed and spindles have to be disconnected (at least on left) to get axle out with ABS sensor located in the spindle. The knock sensor connector is on front of engine next to starter, could have been disturbed in transmission R&R also.
Has the camshaft sensor code come back after having been cleared?
The CVVT units can get stuck from sitting but usually free up from use but codes can set before its functionality is restored.
I would talk with the trans shop guys. Other than the CVVT code, the others could be problems that fall on them.

Naebue · Post by **Naebue** » 09 Jan 2011, 11:25

JRL: Had the oil changed and even a cleaner run through it the day after I got the car (1/5/11). It came out as clean as new oil from a container.
From what I was told, the codes were there prior to the car sitting.
Regular Unleaded Gasoline, got the car on 1/4/11 and have driven it on highway and city, almost through a whole tank of gas

Klausc: I went to Discount Auto and had them clear all the codes before going to Auto Zone for a fresh read, these are the ones that came back.
I'll fill up with premium the next time I do, which will in the next couple days.
I'll look into cleaning the PTC, thanks.

jimmy57: The removing of the axle sounds like more work than I would be able to do with my lack of tools and space. Will do this if I have to go to a repair shop, thank you.
I'll do some searching to see if I can locate the knock sensor to make sure it's attached correctly and not visually damaged
All the codes are from a fresh read. I went to Discount Auto and had them clear all the codes before going to Auto Zone for a fresh read.

Post by **jimmy57** » 09 Jan 2011, 13:56

I wasn't recommending you do anything to axle, I was saying the axle was removed on driver's side or both sides for trans replacement and wires to those wheel speed sensors being damaged or disconnected could be a cause for DTC in ABS and the resultant no VSS code in ECM. Or a bad ABS module (search, lots of talk about that here).
1671 can be bad CVVT solenoid or the cam is out of phase, i.e., the cvvt hub is not timed right to camshaft.
IF you want to check this I can tell you how but it requires removal of the cam position sensor and the reluctor that cam sensor reads. if it is out of phase the fix is even more complex to perform.

Naebue · Post by **Naebue** » 10 Jan 2011, 12:50

jimmy57: I totally misread what you said then, sorry about that. I would like to check anything I can myself before I decide i'm done with it and take it to a shop. What do you mean by "if it is out of phase"?