Intermittent Pending P1133 after replacing OCV
#1
Lead Lap
Thread Starter
Intermittent Pending P1133 after replacing OCV
After rough idle, some bucking, bank 2 misfires, and a CEL error that indicated bank 2 OCV, I replaced the bank 2 OCV. Problem went away for several weeks.
Problem returned.
Then I checked the bank 2 OCV filter. It appeared clogged. Cleaned it. Also disconnected the battery for 30 minutes to reset the ECU.
Now I'm getting a pending intermittent P1133 and VSC/VSC-OFF illuminated. P1133 is Air/Fuel Ratio Sensor Circuit Response Malfunction Bank 1 Sensor 1. Bank 1 sensor 1 was replaced about 40K miles and about 4 years ago. Note: the CEL does not come on. Turning the engine off and then on resets the pending P1133 and the VSC/VSC-OFF lights.
Is it possible the P1133 is somehow related to the OCV and filter problem? Or is it just a coincidence that they are occurring so close together? Suggestions are how to proceed to correct the pending P1133.
Problem returned.
Then I checked the bank 2 OCV filter. It appeared clogged. Cleaned it. Also disconnected the battery for 30 minutes to reset the ECU.
Now I'm getting a pending intermittent P1133 and VSC/VSC-OFF illuminated. P1133 is Air/Fuel Ratio Sensor Circuit Response Malfunction Bank 1 Sensor 1. Bank 1 sensor 1 was replaced about 40K miles and about 4 years ago. Note: the CEL does not come on. Turning the engine off and then on resets the pending P1133 and the VSC/VSC-OFF lights.
Is it possible the P1133 is somehow related to the OCV and filter problem? Or is it just a coincidence that they are occurring so close together? Suggestions are how to proceed to correct the pending P1133.
Last edited by tomf; 12-25-14 at 11:34 AM. Reason: corrected grammer
#2
Lead Lap
iTrader: (1)
Sounds like a coincidence. Do you remember what type of sensor was used?
http://engine-codes.com/p1133_lexus.html
http://engine-codes.com/p1133_lexus.html
#3
Lead Lap
Thread Starter
I'm skeptical that the problem is a bad sensor. But who knows. Maybe I'll just replace it to eliminate that possibility.
Additional symptom: Intermittent bucking at moderate speeds.
Last edited by tomf; 12-25-14 at 11:37 AM. Reason: added symptom
#5
Lead Lap
Thread Starter
#7
Lead Lap
Thread Starter
Just an update. The insulation on the wires from the sensor to the connector was shredded. So I replaced the sensor. I'm not sure if this solved the problem because now I'm getting a P1346. That error relates to the VVT sensor, bank one. Also getting random misfires on bank one. I'll replace the VVT solenoid and clean the screen/filter on bank one, once I get the new VVT solenoid for bank one.
Last edited by tomf; 01-02-15 at 04:54 PM.
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#8
Lead Lap
Thread Starter
Final update: Just finished replacing the bank 1 oil control valve and cleaning its filter. This appears to solved all my problems.
Just to reiterate:
1) Received P1351 Lexus - Variable Valve Timing Sensor Range/Performance Problem Bank 2.
So it appears I had three different problems that occurred nearly simultaneously.
Mr Booby, Thanks for being a sounding board.
Just to reiterate:
1) Received P1351 Lexus - Variable Valve Timing Sensor Range/Performance Problem Bank 2.
- Solved by replacing the bank 2 OCV and cleaning its filter.
- Inspected the wires from the sensor to the connector. The insulation on the wires was shredded. Probably causing a short.
- Solved by replacing the Bank one sensor one Air/Fuel Ratio Sensor because there was not enough usable wire to splice new wire.
- a. solved by replacing the bank one OCV and cleaning its filter.
So it appears I had three different problems that occurred nearly simultaneously.
Mr Booby, Thanks for being a sounding board.
Last edited by tomf; 01-08-15 at 03:55 PM. Reason: corrected spelling
#9
Driver School Candidate
Final update: Just finished replacing the bank 1 oil control valve and cleaning its filter. This appears to solved all my problems.
Just to reiterate:
1) Received P1351 Lexus - Variable Valve Timing Sensor Range/Performance Problem Bank 2.
So it appears I had three different problems that occurred nearly simultaneously.
Mr Booby, Thanks for being a sounding board.
Just to reiterate:
1) Received P1351 Lexus - Variable Valve Timing Sensor Range/Performance Problem Bank 2.
- Solved by replacing the bank 2 OCV and cleaning its filter.
- Inspected the wires from the sensor to the connector. The insulation on the wires was shredded. Probably causing a short.
- Solved by replacing the Bank one sensor one Air/Fuel Ratio Sensor because there was not enough usable wire to splice new wire.
- a. solved by replacing the bank one OCV and cleaning its filter.
So it appears I had three different problems that occurred nearly simultaneously.
Mr Booby, Thanks for being a sounding board.
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stirfryboy
ES - 1st to 4th Gen (1990-2006)
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