1999 RX300, 1315 Diagnostic Code

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10-31-09, 06:25 PM

dlpalmer20

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1999 RX300, 1315 Diagnostic Code

I have a check engine light on. I ran a diagnostic and got code 1315. I cleared the code and was fine for a week. Same thing happened today. Any ideas?

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11-02-09, 07:42 PM

Hayk

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P1315
Igniter Circuit Malfunction (No. 4)
http://www.obd-codes.com/trouble_codes/lexus/

p.s.: Have no clue what that means.

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11-08-09, 12:51 PM

RTIS250

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You likely have a bad #4 ignition coil... The igniter is built into the coil, it is a fairly common problem on the ES and RX for the coils to fail over time. It is also possible to have wiring damage due to rodents, so id take a peak at your wiring. The #4 coil is on the front bank, its the middle coil. Try swapping the middle (#4 coil) and passeger side (your left and #2 coil). If the code follows the coil, and you get a P1305 code, then you have a bad coil.