EngineModerate⚠️ Professional Recommended

P0223

Q: What does OBD2 code P0223 mean?

P0223 means: Throttle/Pedal Position Sensor/Switch B Circuit High Input. The secondary throttle position sensor (Sensor B) is reading a voltage higher than expected.

Throttle/Pedal Position Sensor/Switch B Circuit High Input

The secondary throttle position sensor (Sensor B) is reading a voltage higher than expected.

SeverityModerate

CategoryEngine

Est. Repair Cost$200-$500

Code TypePowertrain

DIY RepairProfessional

⚡ Common Causes

›Faulty sensor
›Short circuit in wiring
›Wiring rubbing against a high-voltage source

⚠️ Symptoms

›Check engine light
›Possible limp mode

✅ How to Fix — Step by Step

Step 1:Inspect wiring for shorts
Step 2:Test sensor B voltage
Step 3:Replace throttle body if sensor has failed

🔧 Diagnostic Tools Required

✔OBD-II Diagnostic Scanner
✔Digital Multimeter
✔Fuel Pressure Gauge
✔Compression Tester
✔Spark Tester

Using the correct diagnostic tools helps identify the root cause of P0223 before replacing parts unnecessarily. Always confirm the fault using live data and manufacturer-recommended diagnostic procedures.

💡 Pro Tip: Check for chafed wiring near the throttle body - a short to a power wire nearby is a common but overlooked cause.

Frequently Asked Questions

What does OBD2 code P0223 mean?+

P0223 stands for Throttle/Pedal Position Sensor/Switch B Circuit High Input. The secondary throttle position sensor (Sensor B) is reading a voltage higher than expected.

What causes code P0223?+

Faulty sensor; Short circuit in wiring; Wiring rubbing against a high-voltage source

How do I fix code P0223?+

Inspect wiring for shorts; Test sensor B voltage; Replace throttle body if sensor has failed

How much does it cost to fix P0223?+

Estimated repair cost for P0223 is $200-$500.

Is P0223 DIY-friendly?+

P0223 typically requires professional equipment and a qualified mechanic.