NOx Sensor issues

Joshrich

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Joined
May 24, 2024
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Manchester
Evening!

I’m currently getting an intermittent P2209 - NOx Sensor Heater Sense circuit range / Performance Bank 1.

It clears and doesn’t immediately return on restart.
No common theme when getting the code, seems fairly random (could be on the motorway, or low speed city driving).

For context - Car is at 126k, and code began around the time of a timing belt change & AdBlue delete.

Any ideas on where I should start looking?
 
Think you kinda answered your own question mate.