P1223 — Pedal Demand Sensor B Circuit High Input

What Does P1223 Mean?

P1223 is a manufacturer-specific diagnostic trouble code: Pedal Demand Sensor B Circuit High Input. This code applies to FORD, LINCOLN, MERCURY, OTHER, BMW vehicles. Unlike generic OBD-II codes, manufacturer-specific codes are defined by the vehicle maker and may only apply to certain makes and models.

Symptoms of P1223

⚠️ Check Engine Light (MIL) illuminated
⚠️ Pedal Demand Sensor B reading stuck at maximum value
⚠️ Related system operating erratically or in default mode
⚠️ Reduced engine performance

Common Causes

🔍 Short to voltage in Pedal Demand Sensor B wiring harness
🔍 Corroded or water-damaged Pedal Demand Sensor B connector
🔍 Faulty Pedal Demand Sensor B outputting maximum voltage
🔍 Damaged wiring rubbing against metal components
🔍 ECM/PCM internal fault (rare)

Frequently Asked Questions

What does P1223 mean?

P1223 indicates: Pedal Demand Sensor B Circuit High Input. The vehicle's computer has detected that the Pedal Demand Sensor B is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code P1223?

You can drive short distances for essential trips, but schedule a diagnosis soon. Driving with P1223 for extended periods may cause additional problems.

How much does it cost to fix P1223?

Repair costs for P1223 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

🔧 Inspect and repair Pedal Demand Sensor B wiring for short to voltage
🔧 Clean or replace corroded Pedal Demand Sensor B connector
🔧 Replace faulty Pedal Demand Sensor B

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.

P1223: Pedal Demand Sensor B Circuit High Input