P2543Low Severity
Supplemental Output Circuit Error / Component 2543
This diagnostic trouble code indicates a malfunction in the associated component circuit.
Common Symptoms of P2543
- MIL Illumination
- Reduced power
What Causes the P2543 Code?
- Wiring issue
- Component failure
How serious is the P2543 code?
Because this code has a low severity level, it is highly recommended to address it promptly. Driving with an active P2543 fault can lead to secondary component failures and decreased fuel economy.
How do you definitively diagnose and fix P2543?
To accurately diagnose the P2543 fault code, you need the exact OEM wiring diagram and diagnostic test procedures for your specific vehicle. Create an Auto Fix Data account to instantly pull the factory diagrams for this fault.
Fix P2543 Now
Access the OEM repair manual and interactive wiring diagram to diagnose this exact code.
- Pin-to-pin wiring diagrams
- Component testing steps
- Technical Service Bulletins
- Identifix confirmed fixes
Related Fault Codes
P0001
Fuel and Air Metering System Malfunction (Circuit 0001)
P0002
Fuel and Air Metering System Malfunction (Circuit 0002)
P0003
Fuel and Air Metering System Malfunction (Circuit 0003)
P0004
Fuel and Air Metering System Malfunction (Circuit 0004)
P0005
Fuel and Air Metering System Malfunction (Circuit 0005)
P0006
Fuel and Air Metering System Malfunction (Circuit 0006)