Fault 311 and Rough Idle: Why Your Speedo Chip Matters to Engine Control
Fault 311 signals a missing speed input to your ECU. When the speedo chip fails, the engine enters limp mode—here’s how to diagnose and fix it.
Fault 311 signals a missing speed input to your ECU. When the speedo chip fails, the engine enters limp mode—here’s how to diagnose and fix it.