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eXOBeX

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Posts posted by eXOBeX

  1. P0155 is the heater inside one of the oxygen sensors (bank 2, sensor 1, it'll be one of the ones on the exhaust manifold rather than after the cats, looks like a spark plug). Grab a used one off eBay and change the plug if necessary (you should find that you can pop the pins out, no need to cut & splice). You'll probably find the universal ones don't work, the fault kept coming back on my sister's Avensis because the heater resistance of the universal one was too low (4Ω, the Toyota ones are around 12Ω).

    You don't want Lexus fixing that one, Toyota quoted £240 to replace ONE, and both had gone! I did the pair for under fifty quid, including the special socket to undo it.

  2. A word of warning, I've tried the aftermarket ones on my sister's Avensis and it hates them, tripping the warning light with P0135 and P0155 codes (oxygen sensor heater circuit malfunction). This appears to be due to the heater resistance (about 4 ohms on the cheap aftermarket ones, 12 ohms on the Toyota ones).

    Keep an eye on eBay for sensors, they're expensive from Toyota/Lexus!

    Do you know what error code you were getting? A P0135 or P0155 wouldn't be fixed by cleaning as it indicates a faulty sensor heater, not a faulty sensor.

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