P2207

NOx Sensor Heater Control Circuit High Bank 1 Sensor 1

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$56–167 (est.)

Symptoms

Check Engine Light Is On
Deterioration in acceleration dynamics
Increased fuel consumption
Possible problems starting the engine in cold weather
Changing the sound of the engine

Causes

Open or short circuit in the NOx sensor heater circuit
Malfunction of the NOx sensor itself
Problems with the heater circuit relay or fuse
Engine ECU malfunction
Damage to the wiring harness near the sensor

How to Fix

Check the integrity of the fuses and relays of the heater circuit
Check the resistance of the sensor heating element
Inspect the wiring harness for damage
Check the voltage at the sensor connector
If necessary, replace the NOx sensor

Related codes

P2206 P2208 P2209