P2244 Fault Code

O2 Sensor Reference Voltage Performance Bank 1 Sensor 1

• What does that mean?
• Symptoms
• Causes
• Solutions

The P2244 fault code indicates a problem with the O2 sensor reference voltage performance in Bank 1 Sensor 1. This sensor is crucial for measuring the amount of unburned oxygen in the exhaust gases, enabling the engine control module (ECM) to optimize the air-fuel mixture for better fuel efficiency and emissions control.

• The O2 sensor's reference voltage should typically range between 0.2 to 0.8 volts.
• A deviation from this range suggests a malfunction or a wiring issue.
• Bank 1 refers to the side of the engine where the first cylinder is located, which is important for understanding which sensor is experiencing issues.

What are the symptoms of the P2244 code?

When the P2244 code is triggered, you may experience the following symptoms:

• Poor engine performance, including rough idling or stalling.
• Decreased fuel efficiency due to improper air-fuel mixture adjustments.
• Check Engine Light illuminated on the dashboard.
• Failed emissions tests as a consequence of incorrect readings causing misadjustments.

What causes the P2244 code?

Common causes of the P2244 fault code include:

• Faulty O2 sensor affecting the reference voltage output.
• Poor electrical connections or damaged wiring in the O2 sensor circuit.
• Problems with the ECM that prevent proper voltage reference from being generated.
• Contaminants or exhaust leaks interfering with sensor readings.

How to fix P2244?

To resolve the P2244 fault code, consider the following steps:

• Inspect the O2 sensor and its wiring for signs of damage or disconnection.
• Replace a faulty O2 sensor with a new component if necessary.
• Verify and repair any electrical issues in the sensor circuit, including shorts or opens.
• Clear the fault code and conduct a road test to see if it reappears; monitor O2 sensor readings to ensure proper functionality.