Questions & Answers for: Toyota 4Runner code for 300

code 300. Replaced 02 4Runner 3.0 showing service code 300. Replaced plugs on 5 and 6. Not much help, still missing. Wires and coils look good. Car sits at airport for extended periods of time. It was

...code of p0770-Shift selinoid E malfunction...What is it? & how do I fix it? How much does it usually cost? Shift solenoids control your transmission shifting. More than likely you will need to ...

...code in the engine computer will disable other systems and cause the other lights to go on. Bring it somewhere and get it scanned. If your a DIY'er bring it into one of the autoparts stores ...

...be made to IAC valve? or is it something completely unrelated? completely unrelated run the fault codes first then consider a problem heated oxygen sensor/s consider a blocked cat converter/s your ...

...code 300 is a random miss, 301 is for cylinder 1 and 306 is for cylinder 6. Code 171 is saying the fuel mixture on bank one is too lean. And that could cause the other codes. Have you checked fuel ...

...code reader to see 300, 301, 306, and 171. We replaced all the coils, cleaned the MAF and throttle body and idle air control valve....still has a check engine light and getting the same codes. Any ...