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new cel codes to decipher P0301 p0303 p0304 p0305 p0420 p1300

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Old 08-15-18, 11:16 PM
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Sonik801
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Default new cel codes to decipher P0301 p0303 p0304 p0305 p0420 p1300

Just when I thought I had most of it figured out I pull the codes today and I got the P0300 random misfire’s in the

P0301, P0303, P0305

and then P0304 so it’s not just the bank one anymore?


I have cleaned OCV and the vvti solenoids will be replaced tomorrow.


I get these codes too

P0420 catalyst system efficiency below threshold bank 1


P1300 no DTC definition found


P1305 no DTC definition found


P1315 no DTC definition found


P1325 no dtc definition found
Old 08-16-18, 07:10 AM
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ukrkoz
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Looks like you have plugs and ignition coils to replace. For sake of diagnostic, as it's easy access, move #4 coil to cylinder 2 or 6, and see if code follows.
I'd re scan after you replaced plugs and coils, the rest could easily be aftereffects of bad fuel combustion.
Also, after you replaced parts, pull ECM fuse out for about 15 minutes. It needs to relearn new parts. There's also Toyota drive cycle, won't hurt to do that too.
Old 08-16-18, 07:15 AM
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ukrkoz
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https://repairpal.com/how-to-perform...ic-drive-cycle
Old 08-16-18, 05:26 PM
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sktn77a
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Multiple codes frequently pop up when you only have a single issue (eg a single bad coil).
Old 08-16-18, 08:49 PM
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ukrkoz
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Sure. Except that for the hassle of getting to the rear plugs and coils, I'd replace all and sleep well.
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