I have a 2000 Avalon and have gotten a Check Engine code of P1354. The Jiffy Lube folks tell me this is something to do with the VVI Malfunction Bank 2. How serious is this? Can I drive the car for a week before I bring it in ?

code p 1354 refers to variable valve timing system malfunction bank 2
causes are problem with valve timing
dirty or low engine oil level
problem VVT ( variable valve timing) controller assembly
faulty oil control valve
defective PCM
It works like this
although the valve timing is initially set at the pulley, that pulley is attached to a moveable section that controls the actual valve timing as is required by different rpm and load settings
That moving action is controlled by a solenoid and oil pressure from the engine
indications of a problem in that area
rough idling
under powered engine

Is the car running fine? Have any aberrations? If not, it is possible you are being victimized by defective sensors. Happens.

Timing belt is a bit stretched. Time to have it replaced. Toyota has to be dead on the money, when it comes to the timing marks. I done several of them and you have to add extra pressure to the belt tensioner to make them run right.

I found this on a google search i hope it will help you as the engine is the same QUESTION: , 2001 Avalon 145,000 miles. Recently developed rough idle when warm. Today produced codes of P1150, P1354. It points to the VVT system. Can a DIY diagnose and repair from home?

Thanks,
John

ANSWER: The P1354 code is for the VVTi malfunction on bank2 which is the cylinder head near the firewall, the 1150 code is for the air.fuel ratio sensor on the same head, the VVTi code can cause the A/F ratio sensor to go out of range, the main cause is the P1354 code which should be delt with first, this can be caused by a worn timing belt that has junped a tooth on the sprocket, this should be checked first, at this mileage if it has never been replaced it may be the problem. If your scanner can read live data see where the engine timing is at.
If the timing is not the problem it may be a bad oil control valve for the VVTi system, to be sure it should be active tested using a diagnostic tool that is capable of doing so, activating the system at idle should cause the engine run rough at idle, if there is no effect on the engine the VVTi is not activated and the problem may be the OCV.

P1354 VVT System Malfunction (Bank 2)
P1133 Air/Fuel Ratio Sensor Circuit Response Malfunction (Bank 1 Sensor 1)
http://www.obd-codes.com/trouble_codes/lexus/ you can find all the codes here

P0330 Knock Sensor 2 Circuit (Bank 2)
P1133 Air/Fuel Ratio Sensor Circuit Response Malfunction (Bank 1, Sensor 1)
P1135 Air/Fuel Ratio Sensor Heater Circuit Malfunction (Bank 1, Sensor 1)
P1346 VVT Sensor Range/Performance Problem (Bank 1)
P1349 VVT System Malfunction (Bank 1)
P1351 Variable Valve Timing / CMP Sensor Range / Performance
P1354 Variable Valve Timing System Fault

NOTE:Variable Valve Timing (VVT) sensor is also known as camshaft position sensor.
The Variable Valve Timing (VVT) system controls intake valve timing in response to driving conditions.

Possible causes are:

1. Incorrect valve timing P1346, P1349, P1351 & P1354
2. Faulty oil control valve P1346, P1349, P1351 & P1354
3. Faulty VVT controller assembly P1346, P1349, P1351 & P1354
4. Faulty ECM All Codes
5. Jumped timing belt All Codes
   
6. Faulty Camshaft Position Sensor P1346, P1349, P1351 & P1354
7. Faulty O2 Sensor (Bank 1, Sensor 1) P1133 & P1135
   

I’m happy to help further over the phone at https://www.6ya.com/expert/jeremy_69f3cc28d95bf514

P1354 is VVT system malfunction bank 2. VVT it Variable Valve Timing. Your ECM controls 2 OCVs (Oil Control Valves) which corrects engine valve timeing for driving conditions. there is a possibility that a pice of debrise has plugged the oil passage in the Bank 2 OCV. If you do not maintain good oil health ( changing your oil and oil filter regularly ) oil will sludge and harden in areas. a pice of this can become dislodged and travel through your oil system and cause a blockage in the system. Other possibilities are, Faulty wireing to the OCV, Faulty OCV, or Faulty ECM

Code P1349 VVI Malfunction Bank 1. Bank 1 the difficult side where the intake body is.

This could be from a slight misfire from poor air. Ensure that the gas cap is on fully and not airtrapped.

http://www.obd-codes.com/p0440

the bank 1 is in the front of your car close to the radiator, the other one is the bank 2. I think you have to replace the bank 1 and bank 2 sensor and the po115 is the coolant temperature sensor, after you replace all these sensors and have the machanic reset or turn off the CHECK ENGINE light. check with the emmission inspector before you begin to replace all these parts. good luck