P24EA

NH3 Sensor Supply Voltage Circuit

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$56–167 (est.)

Symptoms

Check Engine Light Is On
Reduced engine power
Increased urea consumption (AdBlue)
Increased emissions
Possible emergency operation of the engine

Causes

Open or short circuit in the NH3 sensor power supply circuit
NH3 sensor malfunction
Problems with the SCR control unit
Poor contact in the sensor connector
Corroded or damaged wiring

How to Fix

Check the integrity of the sensor power supply circuit
Inspect the connectors and contacts of the sensor
Check the functionality of the NH3 sensor
Scan the SCR control unit for errors
If necessary, replace the NH3 sensor

Related codes

P24EB P24EC P24ED