CEL: Codes P0300, P0301, P0302, P0303, P0304, P0306
12-05-10, 07:04 PM
#1
CEL: Codes P0300, P0301, P0302, P0303, P0304, P0306
Hi all:
Our 1999 RX300 (we've had it since new) is idling and driving a little rough (not as bad as a typical bad coil misfire). The code reader is putting out codes P0300, P0301, P0302, P0303, P0304, P0306. We had 1 coil replaced about 18 months ago so that might explain why we're only getting 5/6 cylinder misfire codes(?) But I can't believe that all 5 coils would go out at once.
EDIT: I checked the service records and it was cylinder 5 coil that was replaced!
Any other ideas that could cause a general misfire code reading?
Thanks
Our 1999 RX300 (we've had it since new) is idling and driving a little rough (not as bad as a typical bad coil misfire). The code reader is putting out codes P0300, P0301, P0302, P0303, P0304, P0306. We had 1 coil replaced about 18 months ago so that might explain why we're only getting 5/6 cylinder misfire codes(?) But I can't believe that all 5 coils would go out at once.
EDIT: I checked the service records and it was cylinder 5 coil that was replaced!
Any other ideas that could cause a general misfire code reading?
Thanks
Last edited by sktn77a; 12-05-10 at 07:32 PM.
12-05-10, 11:47 PM
#2
Hi all:
Our 1999 RX300 (we've had it since new) is idling and driving a little rough (not as bad as a typical bad coil misfire). The code reader is putting out codes P0300, P0301, P0302, P0303, P0304, P0306. We had 1 coil replaced about 18 months ago so that might explain why we're only getting 5/6 cylinder misfire codes(?) But I can't believe that all 5 coils would go out at once.
EDIT: I checked the service records and it was cylinder 5 coil that was replaced!
Any other ideas that could cause a general misfire code reading?
Thanks
Our 1999 RX300 (we've had it since new) is idling and driving a little rough (not as bad as a typical bad coil misfire). The code reader is putting out codes P0300, P0301, P0302, P0303, P0304, P0306. We had 1 coil replaced about 18 months ago so that might explain why we're only getting 5/6 cylinder misfire codes(?) But I can't believe that all 5 coils would go out at once.
EDIT: I checked the service records and it was cylinder 5 coil that was replaced!
Any other ideas that could cause a general misfire code reading?
Thanks
10-24-15, 10:48 PM
#5
Driver School Candidate
I have similar issues with my lexus rx330. The check engine light keeps blinking, the car shakes even when stationary with the engine on especially in traffic, and the car does not ride smoothly on the high way.
I took it to a mechanic workshop/servicing centre where it was suggested that it's engine spark plugs problem which I let them change all six. The air filter and adjacent parts were cleaned including the air flow meter. However, prior to the development of this "flashing check engine light" they have changed the passenger front shock absorberror, both shaft tubing protector, and the two steering locks (the thyroid, the previous day. The problem continues.
Today, I had the car scanned and got these codes:
C1223 (malfunctioning ABS)
C1246 (malfunctioning master cylinder pressure sensor)
P0304 (s1 and s2)
Please I need help for the interpretation of these results/code and how I will sort out these problems.
Thank you all in advance.
I took it to a mechanic workshop/servicing centre where it was suggested that it's engine spark plugs problem which I let them change all six. The air filter and adjacent parts were cleaned including the air flow meter. However, prior to the development of this "flashing check engine light" they have changed the passenger front shock absorberror, both shaft tubing protector, and the two steering locks (the thyroid, the previous day. The problem continues.
Today, I had the car scanned and got these codes:
C1223 (malfunctioning ABS)
C1246 (malfunctioning master cylinder pressure sensor)
P0304 (s1 and s2)
Please I need help for the interpretation of these results/code and how I will sort out these problems.
Thank you all in advance.
10-25-15, 12:46 PM
#6
Moderator
I have similar issues with my lexus rx330. The check engine light keeps blinking, the car shakes even when stationary with the engine on especially in traffic, and the car does not ride smoothly on the high way.
I took it to a mechanic workshop/servicing centre where it was suggested that it's engine spark plugs problem which I let them change all six. The air filter and adjacent parts were cleaned including the air flow meter. However, prior to the development of this "flashing check engine light" they have changed the passenger front shock absorberror, both shaft tubing protector, and the two steering locks (the thyroid, the previous day. The problem continues.
Today, I had the car scanned and got these codes:
C1223 (malfunctioning ABS)
C1246 (malfunctioning master cylinder pressure sensor)
P0304 (s1 and s2)
Please I need help for the interpretation of these results/code and how I will sort out these problems.
Thank you all in advance.
I took it to a mechanic workshop/servicing centre where it was suggested that it's engine spark plugs problem which I let them change all six. The air filter and adjacent parts were cleaned including the air flow meter. However, prior to the development of this "flashing check engine light" they have changed the passenger front shock absorberror, both shaft tubing protector, and the two steering locks (the thyroid, the previous day. The problem continues.
Today, I had the car scanned and got these codes:
C1223 (malfunctioning ABS)
C1246 (malfunctioning master cylinder pressure sensor)
P0304 (s1 and s2)
Please I need help for the interpretation of these results/code and how I will sort out these problems.
Thank you all in advance.
Your questions were answered here
https://www.clublexus.com/forums/rx-...ine-light.html
Salim
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