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

Fuel Gauge Sender: Description and Operation

The IPC will display this message whenever a Class 2 serial data bus request is received from the PCM. This message indicates the PCM is seeing some combination of DTCs P0201 through P0208 (Fuel Injector Open or Shorted) or DTCs P0231 or P0232 (Fuel Pump Open or Shorted).