P0225 — Throttle/Pedal Position Sensor/Switch B Circuit Intermittent
Drive with caution — fix soon.
What P0225 means
This code means the second throttle or pedal position sensor (sensor B) signal is cutting out or fluctuating on and off, rather than failing steadily. It's most often caused by a loose or corroded connector, a chafed wire, or a sensor that's starting to fail intermittently. Diagnosis involves wiggle-testing the wiring and connectors to find the break, and repairs are usually limited to the wiring or sensor.
Common symptoms
- Check engine light comes and goes
- Occasional drops into reduced-power mode
- Intermittent hesitation when accelerating
- Sporadic rough idle
- Throttle response that feels inconsistent
Common causes
- Loose or corroded sensor connector
- Chafed or intermittently broken wiring
- Sensor failing intermittently
- Poor ground connection
- Moisture or corrosion in the harness
Typical repair cost
$100 – $400
Varies by vehicle and root cause.
Frequently asked questions
Can I keep driving with a P0225 code?
Usually yes for short trips, but the intermittent nature means power could drop unexpectedly. Because it's hard to predict, it's smart to get it diagnosed soon rather than risk it acting up at a bad moment.
How much does it cost to fix a P0225 code?
Costs generally fall between $100 and $400. Tracking down an intermittent wiring or connector issue can take diagnostic time, while a failing sensor replacement is more straightforward.
Is a P0225 code serious?
It's a moderate concern. The car often drives normally, but unpredictable throttle behavior is a safety issue, so it's worth addressing before it becomes constant.
Why is an intermittent code harder to fix?
Because the fault isn't always present, the problem can be hard to catch when the car is on the lift. Mechanics often wiggle-test wiring and connectors to recreate the dropout and pinpoint the cause.