avster Posted January 3, 2019 Share Posted January 3, 2019 Hi guys my Glanza was standing for some time and battery totally died. Car has a Unichip on it and since i replaced new battery i keep getting a CEL when i do a diagnostic check it say code 52 which is knock sensor. Car has never shown a CEL only now since battery died and it stood for long time is it possible the Unichip has lost its tune or what should i be looking for with this code? Quote Link to post Share on other sites
SKINY Posted January 3, 2019 Share Posted January 3, 2019 Had this on my GT FOUR, reset the ECU but every time the car was started again code was clear. Then when rpm hit 1750 it came back on. Check the wire to the sensor as these can corrode internally as was the case with mine and I will came across rotten wires on most older Toyota I've owned, current 95 GT has a dose of corroded wire I've been working through Quote Link to post Share on other sites
avster Posted January 3, 2019 Author Share Posted January 3, 2019 Cheers mate will give it a check Quote Link to post Share on other sites
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