A missing or corrupted auto-configuration message from the body control module (BCM) or throttle control module after battery replacement or module replacement.; An interrupted or failed ECM reflash or reprogramming event that left the throttle configuration incomplete.; A wiring fault or poor connection on the CAN bus circuit between the ECM and the module that supplies throttle configuration data.; A failed or incorrectly installed electronic throttle body or accelerator pedal position sensor that prevents the ECM from learning its configuration.; A faulty ECM that cannot store or process the auto-configuration data.; Low battery voltage or a voltage drop during a module programming event that aborted the configuration write.; Aftermarket tuning or a piggyback device that interferes with the factory CAN bus messages.

DTC codes / P06xx · Computer and output circuits / P063E

P063EAuto Configuration Throttle Input Not Present Bank 1

Q: What does code P063E mean?

Auto Configuration Throttle Input Not Present Bank 1. P063E means the engine control module (ECM) has not received a valid throttle input configuration message from another module over the controller area network (CAN) bus, so it cannot confirm the throttle pedal-to-throttle body relationship. The ECM sets this code when the expected auto-configuration data for bank 1 throttle input is missing at startup or during a reflash, leaving the throttle strategy unverified.

P063E means the engine control module (ECM) has not received a valid throttle input configuration message from another module over the controller area network (CAN) bus, so it cannot confirm the throttle pedal-to-throttle body relationship. The ECM sets this code when the expected auto-configuration data for bank 1 throttle input is missing at startup or during a reflash, leaving the throttle strategy unverified.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyProfessional

AreaComputer and output circuits

Symptoms you may notice

The check engine light or electronic throttle control warning lamp is illuminated, often with no other symptoms.
The engine may enter limp mode with reduced power or a maximum speed limit.
The accelerator pedal may feel unresponsive or delayed compared with normal operation.
The engine may idle erratically or stall immediately after startup.
A message such as 'Service Electronic Throttle' or 'Reduced Engine Power' may appear on the driver information display.
In some cases the vehicle cranks but does not start because the throttle configuration is incomplete.

Common causes, most likely first

A missing or corrupted auto-configuration message from the body control module (BCM) or throttle control module after battery replacement or module replacement.
An interrupted or failed ECM reflash or reprogramming event that left the throttle configuration incomplete.
A wiring fault or poor connection on the CAN bus circuit between the ECM and the module that supplies throttle configuration data.
A failed or incorrectly installed electronic throttle body or accelerator pedal position sensor that prevents the ECM from learning its configuration.
A faulty ECM that cannot store or process the auto-configuration data.
Low battery voltage or a voltage drop during a module programming event that aborted the configuration write.
Aftermarket tuning or a piggyback device that interferes with the factory CAN bus messages.

How to diagnose and fix it

Connect a scan tool and read all modules for communication codes, then record freeze-frame data and check for related CAN bus faults before clearing anything.
Verify battery voltage and charging system output, then clear the code and perform a full ignition cycle to see whether the configuration message returns.
Check the CAN bus wiring and connectors between the ECM and the module responsible for throttle configuration, looking for corrosion, chafing, or loose pins.
Perform the manufacturer's throttle body and accelerator pedal relearn or auto-configuration procedure with a capable scan tool.
If the code persists, reprogram or update the ECM with the latest factory calibration using a J2534 pass-through device.
Inspect the electronic throttle body and accelerator pedal sensor for correct part numbers and secure mounting, replacing only if the relearn cannot complete.
As a last step, substitute a known-good ECM only after confirming power, ground, and CAN integrity, then perform the configuration procedure.

Why throttle configuration goes missing

A battery replacement or a jump-start that causes a voltage spike can interrupt the module handshake that writes throttle configuration data, setting P063E without any hard part failure.
Technicians often replace the throttle body when the real fault is an incomplete ECM reflash or a missing configuration message from the BCM, so always check module communication before condemning hardware.
P063E can be stored alongside U0100 or U0121 when the CAN bus is disrupted, and clearing those communication codes first may allow the throttle configuration to complete normally.
Some vehicles require the throttle configuration to be performed with the engine off and the key in a specific position, and skipping that step leaves the code active even with good components.
Aftermarket remote starters or alarm systems that tap into the CAN bus can block the configuration message and cause P063E to return after every clear.

Can I keep driving with P063E?

The vehicle may enter reduced-power limp mode, so avoid highway driving and heavy acceleration until the fault is repaired. If the engine starts and idles normally, a short trip to a repair shop is acceptable, but stop driving if the throttle response becomes unpredictable.

Tools that help

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Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.