7 MIL code - able to fix it
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Driver
Joined: Nov 2002
Posts: 114
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From: IL
7 MIL code - able to fix it
I have multiple MIL codes on my 143K 99 RX300 and I was able to fix the issues.
1. P0300, P0303, P0305, P0171, P0301, P0136. Off course misfire is noticeable. Solution: I cleaned the MAF and throttle body. Replace the 3 ignition coil by the firewall. Reset MIL.
2. MIL comes back with P0300, P0305, P0171. Solution: Added fuel injection cleaner. Reset MIL.
3. MIL comes back with P0171, P1133. Solution: Replace MAF sensor. Reset MIL.
4. MIL comes back with P0171. Solution: Replace O2 sensor by the firewall. Reset MIL. I use a 22mm box-open wrench and use a box-open wrench as a extension, really easy to loosen the O2 sensor.
No more MIL code and car running better. I think if you have a misfire you can ruin the O2 sensor/s. Also the second time P0300 and P0305 shows up, I think the ECM didn't learn the ignition coils yet.
1. P0300, P0303, P0305, P0171, P0301, P0136. Off course misfire is noticeable. Solution: I cleaned the MAF and throttle body. Replace the 3 ignition coil by the firewall. Reset MIL.
2. MIL comes back with P0300, P0305, P0171. Solution: Added fuel injection cleaner. Reset MIL.
3. MIL comes back with P0171, P1133. Solution: Replace MAF sensor. Reset MIL.
4. MIL comes back with P0171. Solution: Replace O2 sensor by the firewall. Reset MIL. I use a 22mm box-open wrench and use a box-open wrench as a extension, really easy to loosen the O2 sensor.
No more MIL code and car running better. I think if you have a misfire you can ruin the O2 sensor/s. Also the second time P0300 and P0305 shows up, I think the ECM didn't learn the ignition coils yet.
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