DTC P1683 (1.5 L Engine)

WARNING: This page is about a different car, the 2022 Honda Accord, 2021 Honda Accord, 2020 Honda Accord, 2019 Honda Accord, and 2018 Honda Accord. However, it is still accessible from the selected car via links, so may be relevant.

DTC P1683 : Throttle Valve Default Position Spring Performance Problem

WARNING:

Do not insert your fingers into the installed throttle body when you turn the vehicle to the ON mode, or while the vehicle is in ON mode. If you do, you will seriously injure your fingers if the throttle valve is activated.

NOTE: Before you troubleshoot, review the general troubleshooting information .

DTC Description	Confirmed DTC	Pending DTC
P1683 Throttle Valve Default Position Spring Performance Problem

DTC (PGM-FI)

Problem verification

-1. Turn the vehicle to the ON mode.

-2. Clear the DTC with the HDS.

-3. Start the engine. Hold the engine speed at 3, 000 rpm without load (CVT in P or N, M/T in neutral) until the radiator fan comes on, then let it idle.

-4. Turn the vehicle to the OFF (LOCK) mode, and wait 10 seconds.

-5. Turn the vehicle to the ON mode.

-6. Check for Pending or Confirmed DTCs with the HDS.

DTC Description	Confirmed DTC	Pending DTC
P1683 Throttle Valve Default Position Spring Performance Problem

Is DTC P1683 indicated?

YES

Go to step 2.

Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the throttle body and the PCM. If the on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the on-board snapshot .

Throttle body default position spring check
-1. Turn the vehicle to the OFF (LOCK) mode.

-2. Disconnect the intercooler outlet pipe B and the hose from the throttle body .

-3. Push the throttle valve closed as shown.

Courtesy of HONDA, U.S.A., INC.

-4. Release the throttle valve.

Does the throttle valve return?

YES

Clean the throttle body . If DTC P1683 is indicated, replace the throttle body .

NO

Replace the throttle body .