P2210 NOx Sensor 1 Heater Feedback Circuit Low Voltage

OBD2 Code: P2210

Description: NOx Sensor 1 Heater Feedback Circuit Low Voltage

Definition: This code indicates that the powertrain control module (PCM) has detected a low voltage condition in the heater feedback circuit of nitrogen oxide (NOx) sensor 1. The heater is used to bring the sensor up to operating temperature quickly for accurate emissions monitoring.

p2210 – NOx Sensor 1 Heater Feedback Circuit Low Voltage

Typical Severity: Moderate

Common Causes

P2210 – NOx Sensor 1 Heater Feedback Circuit Low Voltage

Common Causes:

• Faulty NOx sensor 1 heater
• Open or short circuit in the NOx sensor 1 heater wiring
• Corrosion or poor connections in the NOx sensor 1 heater circuit
• Defective powertrain control module (PCM)

 

Common Misdiagnosis

OBD2 Code: P2210

Description: NOx Sensor 1 Heater Feedback Circuit Low Voltage

Common Misdiagnosis: Replacing the NOx sensor without checking for wiring issues or a faulty control module.

 

Common Diagnostic Steps

OBD2 Code: P2210

Description: NOx Sensor 1 Heater Feedback Circuit Low Voltage

• Check the NOx sensor heater circuit for any signs of damage or corrosion.
• Inspect the wiring and connectors related to the NOx sensor for loose connections or frayed wires.
• Test the voltage supply to the NOx sensor heater using a multimeter to ensure it is within specifications.
• Verify that the ground connection for the NOx sensor is secure and free from rust or dirt.
• Examine the fuse associated with the NOx sensor heater circuit and replace if necessary.
• If equipped, use an OBD2 scanner to monitor live data and confirm if there are any other related codes present.
• Consider replacing the NOx sensor if all electrical checks pass but code persists.