Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Insufficient Output


1. Faulty ignition system.
2. Faulty air flow sensor.
3. Shorted intake air temp sensor.
4. Open or shorted throttle position sensor.
5. Faulty pressure exchange solenoid valve.
6. Faulty pressure sensor.
7. Stuck or closed EGR control solenoid valve.
8. Faulty coolant temp. sensor.
9. Faulty ECU.