Error code
OBD2 P2406
OBD2P2406
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.
What it means
Evaporative Emission System Leak Detection Pump Sense Circuit High.
Severity
moderateCan be driven but may cause emissions issues and potential long-term damage.
Summary
P2406 indicates an issue with the evaporative emission (EVAP) leak detection pump sense circuit, which is part of the EVAP system designed to detect fuel vapor leaks.
Common Causes
- Wiring short to positive on the EVAP leak detection pump
Fixes
- Repair or replace the faulty wiring in the EVAP leak detection pump sense circuit.
FAQ
What does P2406 mean?
P2406 indicates a high voltage issue with the evaporative emission system's leak detection pump sense circuit.
How serious is P2406?
It is moderately serious as it can affect emissions and potentially cause long-term damage if not addressed.
Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.
More OBD2 codes
- P2400Evaporative Emission System Leak Detection Pump Control Circuit/Open
- P2401Evaporative Emission System Leak Detection Pump Control Circuit Low
- P2402Evaporative Emission System Leak Detection Pump Control Circuit High
- P2403Evaporative Emission System Leak Detection Pump Sense Circuit/Open
- P2404Evaporative Emission System Leak Detection Pump Sense Circuit Range/Performance
- P2405Evaporative Emission System Leak Detection Pump Sense Circuit Low
- P2407Evaporative Emission System Leak Detection Pump Sense Circuit Intermittent/Erratic
- P2408Fuel Cap Sensor/Switch Circuit
- P2409Fuel Cap Sensor/Switch Circuit Range/Performance
- P2410Fuel Cap Sensor/Switch Circuit Low
- P2411Fuel Cap Sensor/Switch Circuit High
- P2412Fuel Cap Sensor/Switch Circuit Intermittent/Erratic