I have a 2014 RX350 with ~130k miles that had the check engine, awd/trac warnings all come on yesterday during a long road trip (5 hours one direction in the morning and it came on about 4 hours into the drive on the way back in the afternoon). A scan shows these error codes:

P0015 "B" Camshaft Position - Timing Over-Retarded Bank 1
C1280 Engine Control System Malfunction
P1604 Startability Malfunction
B2620 ECU Power Source Circuit
B2282 Vehicle Speed Signal
Any help with identifying what that all means - and, more importantly - what a mechanic should charge to fix it would be appreciated.

 

How old is your battery? Failing batteries often throw spurious OBDII codes in these vehicles.

 

I agree, they are probably all caused by low voltage from a dying battery. This has been asked many times on this forum. It is usually a battery. The big chain Auto parts stores can do a load test on your battery for free.

 

Replaced 2 years ago. Seems relatively new for that. But perhaps not.

 

I went to Autozone, and they tested it, saying the battery tested fine.

 

Autozone is not always reliable, and any battery can fail at any time.

What does your battery voltage measure at the battery terminals when the engine is NOT running?

What does your battery voltage measure at the battery terminals when the engine IS running?

These two voltage measurements are critical and will help you determine if the issue is indeed with your battery. I am betting that it is....

 

Your concerns may be correct, but imho it can be an over-reaction ... down to what the mechanic may charge...

The highlighted item can be the common root cause and what triggered it can be the charging system or the battery. It can be environment issue ... excessive heat etc.

Q: Do you want to investigate on your own or take it to a mechanic?

If you want to investigate,
record these codes [Done]
Check the battery [Done]
Check the battery posts.
Inspect for any visual damage to wires and trace any smell.
Look for droppings/drips etc where you park.
Check coolant level with engine cold. Open the radiator cap tp verify and not just the overflow tank.
Clear the ECU.
If error comes back, then the issue is real.

If you will be mechanic dependent
Ask your colleagues and friends for a reliable & trustworthy mechanic within driving distance.
If you have nothing to go bye, you can count on dealership or specialist shops who repair Japanese imports.


For any one to estimate the repair cost one has to determine the root cause and then come up with parts + labor to fix.
[In a different millennium, when I was a boy, we had to get a diesel mechanic to fix our broken car in the middle of the night. The mechanic spent 4hrs in figuring out what is wrong. By early morning he had it repaired and said 5c for the pipe that has a hole and $50 for his diagnosis and labor. [I am taking the liberty of converting the price in $ but I hope you get the idea]

Salim