P24EB — NH3 Sensor Supply Voltage Circuit Low

What Does P24EB Mean?

P24EB is a diagnostic trouble code indicating: NH3 Sensor Supply Voltage Circuit Low. This code relates to the powertrain system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

Symptoms of P24EB

⚠️ Check Engine Light (MIL) illuminated
⚠️ NH3 Sensor Supply Voltage reading at zero or minimum value
⚠️ Related system not functioning or in fail-safe mode
⚠️ Reduced engine performance

Common Causes

🔍 Open or broken wire in NH3 Sensor Supply Voltage circuit
🔍 Poor ground connection at NH3 Sensor Supply Voltage
🔍 Faulty NH3 Sensor Supply Voltage with no output signal
🔍 Disconnected or loose NH3 Sensor Supply Voltage connector
🔍 Blown fuse in related circuit

Frequently Asked Questions

What does P24EB mean?

P24EB indicates: NH3 Sensor Supply Voltage Circuit Low. The vehicle's computer has detected that the NH3 Sensor Supply Voltage is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code P24EB?

You can drive short distances for essential trips, but schedule a diagnosis soon. Driving with P24EB for extended periods may cause additional problems.

How much does it cost to fix P24EB?

Repair costs for P24EB typically range from $20 to $300, depending on the root cause. Simple wiring or connector repairs are on the lower end, while component replacement costs more. A proper diagnosis ($80–$150 at most shops) will identify the exact cause before committing to expensive parts.

What To Do Next

Possible Fixes

🔧 Repair broken wire or restore ground in NH3 Sensor Supply Voltage circuit
🔧 Clean and secure NH3 Sensor Supply Voltage connector and ground points
🔧 Replace failed NH3 Sensor Supply Voltage

1
Find your vehicle above
Click your make and model for real owner reports and common causes specific to your vehicle.
2
Check for recalls
Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.
3
Get a professional diagnosis
A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.

P24EB: NH3 Sensor Supply Voltage Circuit Low