Error code
OBD2 P2443
OBD2P2443
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.
What it means
Secondary Air Injection System Switching Valve Stuck Closed.
Severity
moderateCan drive but may experience reduced performance and increased emissions.
Summary
P2443 indicates that the secondary air injection system switching valve on bank 2 is stuck closed, which affects engine emissions.
Common Causes
- Wiring issues
- Valve malfunction
Fixes
- Replace the secondary air injection system switching valve.
FAQ
What does P2443 mean?
P2443 means that the secondary air injection system switching valve on bank 2 is stuck closed.
How do I fix P2443?
The most common solution is to replace the faulty secondary air injection system switching valve.
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
- P2406Evaporative Emission System Leak Detection Pump Sense Circuit High
- 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