P0444Medium Severity
Auxiliary Emission Controls Malfunction (Circuit 0444)
This diagnostic trouble code indicates a malfunction in the associated component circuit.
Common Symptoms of P0444
- Check Engine Light (CEL) Illumination
- Potential decrease in auxiliary emission controls efficiency
- Engine performance issues related to circuit 0444
- Possible stall or rough idle
What Causes the P0444 Code?
- Faulty sensor or actuator in auxiliary emission controls
- Corroded, broken, or shorted wiring harness
- Poor electrical connection
- In rare cases, a failing Engine Control Module (ECM)
How serious is the P0444 code?
Because this code has a medium severity level, it is highly recommended to address it promptly. Driving with an active P0444 fault can lead to secondary component failures and decreased fuel economy.
How do you definitively diagnose and fix P0444?
To accurately diagnose the P0444 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.
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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
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P0001
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P0003
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P0004
Fuel and Air Metering System Malfunction (Circuit 0004)
P0005
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P0006
Fuel and Air Metering System Malfunction (Circuit 0006)