P2242 Fault Code

O2 Sensor Positive Current Control Circuit High Bank 2 Sensor 1

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

The P2242 fault code indicates an issue with the O2 (oxygen) sensor positive current control circuit for Bank 2 Sensor 1 in your vehicle. This sensor plays a critical role in monitoring the oxygen levels in the exhaust gases, which helps the engine control unit (ECU) manage fuel efficiency and emissions. When this circuit detects a higher-than-expected voltage, the code is triggered, indicating potential issues with the circuit or the sensor itself.

What are the symptoms of the P2242 code?

Common symptoms associated with the P2242 code may include:

• Illuminated check engine light on the dashboard
• Decreased fuel efficiency due to improper fuel mixture
• Potential rough idling or stalling in the engine
• Increased emissions output, which may result in failing emissions tests

What causes the P2242 code?

The primary causes of the P2242 code can include:

• Faulty O2 sensor (Bank 2 Sensor 1)
• Damaged wiring or connectors leading to the sensor
• Short circuit in the sensor circuit
• Issues with the engine control module (ECM) that affect sensor readings
• Corrosion or loose connections in the circuit

How to fix P2242?

To address the P2242 code, consider the following steps:

• Inspect the O2 sensor wiring and connectors for any visible damage or corrosion;
• Test the O2 sensor for proper operation using a multimeter or diagnostic tool;
• Replace the O2 sensor if it is determined to be faulty;
• Clear the fault code and conduct a test drive to see if the code returns. If it does, further diagnostic tests on the vehicle’s electrical systems may be necessary.