P069F
Throttle Actuator Control Lamp Control Circuit.
- Generic
- Powertrain
- Generic code
- Medium severity
How this code is built
- P
- SystemPowertrain
- 0
- Defined bySAE, the same on every car
- 6
- AreaComputer and output circuits
- 9F
- FaultThe specific fault in that area
What it means
P069F is the generic code for a fault in the control circuit of the throttle actuator control lamp, the warning light that tells the driver about electronic throttle problems. The engine control unit commands the lamp on or off and monitors the driver circuit. It set the code because the circuit voltage or state did not match what it commanded, which points to an open circuit, a short or a driver fault. The exact lamp, wiring and whether the lamp is driven directly or over the network depend on the model.
Symptoms
- Throttle or engine warning lamp stays on, flashes or never lights at bulb check
- Warning lamp does not come on at ignition-on when it should
- Other throttle or engine management codes stored alongside it
- Reduced power or limp mode if a real throttle fault is also present
- Intermittent warning lamp behaviour that changes with vibration or temperature
Possible causes
- Damaged, chafed or corroded wiring between the engine control unit and the instrument cluster lamp circuitlikely
- Poor connection or corrosion at the engine control unit or instrument cluster connectorlikely
- Faulty lamp, bulb or LED, or a fault in the instrument cluster driverpossible
- Blown fuse or loss of power or earth supply to the lamp circuitpossible
- Internal fault in the lamp driver of the engine control unitrare
- Outdated or faulty control unit software where a manufacturer bulletin lists it as a causerare
How to diagnose
- Read all stored and pending codes and freeze frame data, and note any throttle body, pedal sensor or network codes that need diagnosing first
- Switch the ignition on and watch the warning lamp during the bulb check, noting whether it lights, stays on or stays off
- Inspect the wiring, connectors and fuses for the lamp circuit and engine control unit for damage, water ingress, corrosion or pushed-out pins
- Check the relevant fuse and the power and earth supplies against the wiring diagram for your model
- Wiggle-test the harness and connectors with the ignition on while monitoring live data or the lamp for changes
- Test the lamp circuit for continuity, short to earth and short to supply with the connectors disconnected, following the model-specific wiring diagram
- Check the instrument cluster and lamp output using a scan tool's active test, if the model supports it
- Clear the code and road test to see whether it returns, and check for a manufacturer software bulletin for your model
How to fix
- Repair or replace damaged wiring and restore the connections in the lamp control circuit
- Clean, repair or replace corroded or loose connectors and terminals
- Replace the faulty lamp, LED or instrument cluster if the fault is confirmed there
- Replace a blown fuse only after finding and fixing why it blew
- Replace or repair the engine control unit only after wiring and cluster have been ruled out
- Apply a manufacturer-approved software update only if a bulletin identifies it as the cause for your vehicle
Can I keep driving?
The car can usually be driven with care for a short time, but the driver may not be warned of a real throttle fault, so get it checked soon. If the car is in limp mode, hesitates or has other throttle codes, limit driving and have it inspected promptly.
Guide written by AI from the code's definition. Confirm with a diagnosis before replacing parts.
