What does code P0507 mean on a Mitsubishi and is it safe to drive?
P0507: Idle Air Control System RPM Higher Than Expected. Here's what it means on your Mitsubishi, what usually causes it, what repairs typically cost, and how safe it is to keep driving.
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What this code means
Idle speed is higher than the PCM expects. Often caused by a vacuum leak or dirty IAC valve.
Common causes for your Mitsubishi
- Vacuum leak
- Dirty or faulty idle air control valve
- Throttle body carbon buildup
Symptoms
- High idle
- Check Engine Light
- Possible surging
Typical fixes
- Find and fix vacuum leaks
- Clean or replace IAC valve
- Clean throttle body
Repair cost range
For a Mitsubishi, repairs for P0507 often fall between $50 and $400, depending on the cause and whether you use OEM or aftermarket parts. Labor rates vary by location.
Known issues on Mitsubishi
Mitsubishi 4B12 and V6 electronic throttle body carbon is the primary P0507 cause. On Lancer Evo X 2.0T, a boost leak from intercooler piping is a common alternative cause—inspect all boost connections before cleaning the throttle body.
Most commonly affected models
Outlander 2007–2013Lancer 2008–2015Eclipse 2006–2012