donbrew

I wonder how that could cause a short circuit.
Generic advice: "May include" out of round right rear wheel.
The first diagnostic point is always "check for after-market installed equipment". Should we suspect any replacement speakers for all eletrical faults?

Oldblue

I don’t understand your reasoning in your last post Donbrew, please explain your logic

donbrew

I can't explain without retyping the words.
If you are going by the list of "could be" the include all of them. "Could be some electronic equipment incorrectly installed", speakers are electronic.
I prefer Occam's Razor. If a short circuit is the reason for the fault code, look for a short circuit. I cannot think of a scenario that a loose timing chain would cause a short circuit. The things that have electrical connections are the VVT valves the cam sensors and the crank sensor. A completely fried sensor might cause a short but usually causes an open. A bad chain would cause a mismatch between the crank sensor and the cam sensor not a short circuit.

P2090 means short circuit in the VVT control circuit, a hot wire in direct contact with ground. P2091 means an open VVT control circuit, a broken or disconnected wire. Either "could be" a bad sensor or electrical solenoid or wires in the wrong place at the wrong time.

Since the VVT valves were replaced just before P2090 popped up I would be looking at the wires and connectors to the exhaust VVT valve first. Assuming the unnamed "valve timing codes" were not P0016 or P0017.

Pretty much moot as the O P has not returned. Didn't return for his other thread started 10 years ago, either.

Oldblue

Thanks.