I own a 1999 Toyota Solara and the check ingine light is on. I have a n ODB code reader and it reads the code #P0135 heated oxygen senser circiut malfunctoin (bank 1, senser 1) I changed the oxygen senser on the front manifold and erased the code but did not solve the problem the code is back, what can i do to solve this problem

P0135 code is: Oxygen O2 Sensor Heater Circuit Malfunction (Bank 1, Sensor 1)

This code refers to the front oxygen sensor on Bank 1.

The heated circuit in the oxygen sensor decreases time needed to enter closed loop. As the O2 heater reaches operating temperature, the oxygen sensor responds by switching according to oxygen content of the exhaust surrounding it. The ECM tracks how long it takes for the oxygen sensor to begin switching. It the ECM determines (based on coolant temp) that too much time elapsed before the oxygen sensor began operating properly, it will set P0135.

Symptoms: You will likely notice poor fuel economy the illumination of the MIL.

Causes: A code P0135 may mean that one or more of the following has happened: O2 Heater element resistance is high Internal short or open in the heater element O2 heater circuit wiring high resistance open or short to ground in the wiring harness.

Possible Solutions: Repair short or open or high resistance in wiring harness or harness connectors Replace oxygen sensor (cannot repair open or short that occurs internally to sensor)

P1491-This code is for the radiator fan control relay circuit.
This can be caused by bad wiring, a faulty fan, a bad thermostat and even a bad pcm. Most likely it is a wiring issue.
P0132 This involves the front oxygen sensor on Bank 1. This code indicates that the heated oxygen sensor reading is too high.
P0135 This code refers to the front oxygen sensor on Bank 1. The heated circuit in the oxygen sensor decreases time needed to enter closed loop.
As the O2 heater reaches operating temperature, the oxygen sensor responds by switching according to oxygen content of the exhaust surrounding it. The ECM tracks how long it takes for the oxygen sensor to begin switching. It the ECM determines (based on coolant temp) that too much time elapsed before the oxygen sensor began operating properly, it will set P0135. You need a new Bank 1 sensor 1 O2 sensor !

need toto the block engine change knock sensor attached to the block eengine located to the back side block

P0125 Insufficient Coolant Temperature for Closed Loop Fuel Control.Only one I could find,but I will look some more.

P0302 TOYOTA - Cylinder 2 Misfire Detectedhttp://engine-codes.com/p0302_toyota.htmlForum CodePossible causes- Faulty spark plug 2
- Faulty ignition coil 2
- Ignition coil 2 harness is open or shorted
- Ignition coil 2 poor electrical connection
- Clogged or faulty fuel injector 2
- Injector 2 harness is open or shorted
- Injector 2 poor electrical connection
- Improper spark plug 2
- Insufficient cylinder 2 compression
- Incorrect fuel pressure
- Intake air leak
P0135 - O2 Sensor Heater Circuit Malfunction Bank 1 Sensor 1http://engine-codes.com/p0135.htmlForum CodePossible causes- Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit open shorted to ground
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit poor electrical connection
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit fuse
- Faulty Engine Control Module (ECM)
Tech notes The code means that there is a problem with the heater element circuit of the heated oxygen sensor. The Engine Control Module (ECM) monitors how long it take the sensor to warm up and start sending an adequate signal. The code means the the sensor is taking too long to warm up. Replacing the O2 Sensor 1 usually takes care of the problem
P1705 TOYOTA - Direct Clutch Speed Sensor Circuit Fault.
This is related to the sensor that gives info about the slippage rate o fthe transmisssion to the Transmission Control Module..

P0135 indicates that the heated oxygen sensor 1 on bank 1 is not functioning properly.

P0773
This is the torque converter lockup solenoid. Is the converter locking up? The solenoid can be accessed by removing the trans oil pan. Coil resistance is 10.16.9 ohm, check to see if the solenoid operates when 12DC is applied.

Can also be the wiring to the solenoid from ECU.

AutoZone will lend you the tools you need to change the O2 sensor . You "Buy" the tool ( about $25)and get a full refund when you return it.

Long skinny arms DO come in handy but you may be able to get to it from under the car also

I'm dealing with the exact same issue on a 2000 Solara. From the internet research I've done so far I've learned that the P0135 code indicates a failure of the heating circuit in the O2 sensor. If you've already replaced the O2 sensor (as I have) and still get the code, chances are that the problem lies in the wiring between the EFI controller and the O2 sensor, or with the ECM (engine computer) itself. There is a diagnostic procedure to determine the cause, but it's not for the average do-it-yourself mechanic. If you're uncomfortable with in-depth diagnostics, you may want to pass this along to a Toyota technician. Good luck.

You need to have the codes read to see what caused it, Autozone will read the codes for free.

1999 TOYOTA CAMRY--CHECK ENGINE LIGHT CAME ON THEN A DAY LATER THE TRAC OFF LIGHT CAME ON. COULD YOU TELL ME WHAT MIGHT BE WRONG.