A failed throttle position sensor (inside the throttle body). Wiring or connector problems. A 5-volt reference problem.

P0220 Throttle/Pedal Position Sensor/Switch "B" Circuit

Q: What does P0220 mean?

P0220 means the engine computer isn't getting a usable signal from throttle position sensor B, which often triggers reduced power. The engine computer isn't getting a usable signal from the second throttle position sensor (B). Electronic throttles use two sensors that cross-check each other.

Throttle

P0220 means the engine computer isn't getting a usable signal from throttle position sensor B, which often triggers reduced power.

The engine computer isn't getting a usable signal from the second throttle position sensor (B). Electronic throttles use two sensors that cross-check each other.

Can I keep driving? Not if you can avoid it.

Expect reduced power or limp mode. Drive only as needed and get it fixed.

Common causes

A failed throttle position sensor (inside the throttle body)
Wiring or connector problems
A 5-volt reference problem

Symptoms

Reduced power or limp mode
Hesitation
Check-engine light

What to check first

Inspect the throttle body connector and wiring.
Check the reference voltage and ground.
Watch both throttle sensor readings with a scan tool.
Replace the throttle body if sensor B is faulty.

What does P0220 mean on your vehicle?

The likely cause depends on your engine. iRepair researches your exact year, make, model and engine (service bulletins, recalls and owner reports) and tells you what to check first. Your first 3 questions are free.

Ask iRepair about P0220

No scanner? Most auto parts stores read check-engine codes for free.

Related codes

General guidance for P0220 on most vehicles. Some makers use the same code a little differently; confirm in the service information for your vehicle, put safety first, and see a professional when in doubt.