P220C

NOx Sensor Supply Voltage Circuit Bank 2 Sensor 1

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$56–167 (est.)

Symptoms

Check Engine light comes on
Deterioration of engine performance
Increased fuel consumption
Increased level of harmful emissions
Possible misfires

Causes

Open or short circuit in NOx sensor wiring harness
Malfunction of the NOx sensor itself
Problems with the relay or power fuse
Engine control unit (ECU) malfunction
Corrosion or poor contact in sensor connectors

How to Fix

Check the integrity of the NOx sensor wiring harness
Check the sensor supply voltage
Inspect the sensor connectors for corrosion or damage.
Replace NOx sensor if necessary
Check and replace power supply fuse or relay

Related codes

P220D P220B P220A