P0224

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

Severity: High
Driving: Drive only to a garage

The signal from throttle or pedal position sensor "B" is intermittent - dropping out and returning. Intermittent faults on a throttle circuit are particularly unpleasant because the reduced-power mode can engage and clear while driving.

Possible causes

CommonLoose or corroded connector
CommonChafed wiring shorting intermittently against the engine or bulkhead
PossibleFailing sensor breaking down when hot

What you might notice

Power cutting in and out while driving
Warning light appearing and clearing
Idle occasionally hunting
Fault often worse over rough roads or when the engine is hot

What to check, in order

Treat this as urgent. Intermittent power loss in traffic is a genuine hazard.
Unplug and inspect the connector, looking for spread terminals and a latch that does not click home.
With the engine idling, gently flex the harness near the sensor and watch the live position value for dropouts.
Trace the harness for chafing where it crosses brackets or the bulkhead.
Fix the connection and re-test before replacing the sensor - intermittents are far more often wiring than components.

Read this code from your own car

Plug an ELM327 adapter into the OBD-II port under the dashboard. Pin16 reads every stored, pending and permanent code, explains each one like this page does — offline, with no account — and shows what the car recorded when the fault was set.

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Where this code sits

B · Body C · Chassis P · Powertrain U · Network and communication

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