Hi All,

Put engine into new project, and got a P0020. Replaced VVT solenoid, but it came back. Cleaned connector, code, hard reset and still comes back.

Ideas?

Thanks!

 

Also, comes on immediately when the car is turned on, and comes back immediately after I clear it.

 

Hi dsnyder586,

I think the forum is glitching for me because I can't read your car year, model and engine info in your signature, but assuming it's an X308, according to the DTC Summaries Manual, the first two possible causes of P0020 are a problem with the ECM to VVT solenoid drive circuit wiring, or a problem with the VVT to ECM circuit ground. So it sounds like you still have a wiring problem. It could be corrosion on an electrical connector or on the associated ground/earth point.

You can download the X308 Electrical Guide for your model year here:

JagRepair.com - Jaguar Repair Information Resource


I am attaching the 2000 DTC Summaries Manual here. Let me know if your car is a different model year - I probably have the correct manual.

Cheers,

Don

 

Hey Don-

THANK YOU! Car is an MY2000 X308, engine and trans ran fine in other car, so I a, leaning towards a ground or connector issue as well.....

 

Please keep us informed, and in the meantime, you might check your signature in your Control Panel to see if your car year, model and engine info has been lost. Another member mentioned a week or so ago that his info had disappeared for no reason so he had to add it again.

Cheers,

Don

 

One more item, not sure if it is related- The ABS/TRAC/FAIL comes on, even after I swapped the unit with a good one-
Correlation?

 

Possibly one of the cables is broken, or a sensor faulty or a ring plugged with dirt.

 

dsnyder586,

In case you are not familiar with RJ237's shorthand terms, I think he means that possibly one of the ABS wheel speed sensors is faulty, or its electrical connector is corroded or contaminated, or its wiring harness has been broken (open) or shorted to ground, or one of the ABS reluctor rings is plugged up with dirt between its teeth and not providing the proper signal to the sensor. Those are all common causes of ABS and Traction Control system problems.

Cheers,

Don

 

Ok, back at it after a (VERY) busy week....

Does anyone know if the vvt solenoid on the drivers side and the ABS/TRAC etc are connected in any way wiring wise?

 

I cannot imagine that they are related. Different modules and no interconnected control strategy! The only possibility is a low battery.
The fault code seems to indicate an open circuit on the VVT solenoid. So, I would use an ohmmeter to measure each side's solenoid resistance to see if B side was the same as A side. If so, then look to the connector and the wiring. It should be straightforward (if not easy!) to find.

 

Thanks to all- I found a *very* frayed wire going to the tensioner plug- cuold have been from the accident, or from when we wulled it (accident made the opening very tight).

After a few restarts the ABS/TRAC lights went off so all is good for now- just need to smog, transfer and off she goes with my son to college! (albiet two miles from here.)