Take a look at the wiring connections to your fuel injectors. You may have a bad connection.
Are the wiring connections to the fuel injectors same as the connection to the vacuum thingy?
I don't have Toyota wiring colors. I'd just get at the injectors and see if the wires are ok
The problem was in the vacuum switching valve, not the electrical connection. Once I replaced the valve with a new one, the check engine light disappeared. Funny thing is, the dahsboard was previously displaying TRC and VSC errors before but after replacing the above valve, all these errors disappeared; don't know how they were all connected.
Anyway, thanks to everyone who chimed in on various ways to troubleshoot the issue. Problem is now solved.
Great! Thanks for coming back and posting the fix. This might help someone else. I wish everyone reported back like you. Nice job, Moses
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SOURCE: Error P0155
That code will not affect the drivability of the vehicle. The heater does just that: it heats up the oxygen sensor to operating temperature. You can change it yourself, raise the vehicle up, the sensor is the one on the passenger side, right after the exhaust manifold.
Thanks for choosing FixYa for advice!
SOURCE: error code P0135 O2 sensor heater circuit
video the error code P0 135 02 sensor heater circuit
SOURCE: HI I have toyota avensis verso
Air/Fuel Sensor Heater Circuit. (Bank 1 Sensor 2)
The A/F sensors are positioned high in the manifold before the cat and are used to make adjustments to the air/fuel ratio of the fuel injection system. The heated oxygen sensors are positioned after the cat and check the efficiency of the cat (what happened in there as a result of the A/F sensors above). They too can signal changes to the air/fuel ratio. These latter sensors only work when they are hot and need to be electrically heated quickly to give decent information quickly. They work by comparing the oxygen inside the exhaust with the oxygen on the outside.
You could say that the ones before the cat make large adjustments and the ones after make smaller refinements.
It is worth remembering that a fault code could have been stored because at some stage the sensor went outside of its range and for this reason it is always worth cancelling any stored codes as this sometimes puts the light out. There are also several other reasons why a sensor could be showing a fault (it is correctly saying that something else is causing incorrect air/fuel ratio) such as leaky EGR valves or vacuum pipes so just have a look around to see if there is anything obvious.
The DTC code will normally indicate the exact sensor that is faulty or at least showing out of range and not the group of sensors. In this case as you stand looking at the engine from in front of the car it is the top one on the drivers side.
Keep in mind they are sensitive devices (read that as fickle) and although you should start there you can often end up changing more than one and some cases even the cat before you can get them to settle down.
Good luck.
SOURCE: toyota rav 4 2002 gearbox shifting problem,engine
Hi, Toyota have recalled its 2001-2003 Rav4s I own 2 of them and my 2002 had the same problem until I call Toyota National customer service and confirmed that my VIN# fail in the recalled vehicle. the main problem is ECM and replaced by local Toyota dealer free of charge. You need to act now by next year this warranty will end since your vehicle will turn 10 years. The other thing is it got to be under 150,000 miles on it. Call the Toyota National customer service right away.
SOURCE: Search Fixya...I have a malfunction in the circuit 2M218
hub replacement and tie rod end replacement still making a noise when i turn to the left and driving straight, stops when i turn to the right
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