Parts for your 2013 Honda Accord-Throttle position sensors

2013 Honda Accord throttle position sensors (TPS): what they do and how to look after them

Per Honda’s 2013 Accord Service Manual (PGM-FI/ETCS section), the model uses an electronic throttle control system with two throttle position sensors integrated into the throttle body, plus an accelerator pedal position sensor at the pedal. Alldata/Mitchell workshop databases and Honda’s parts catalogue list the TPS as part of the throttle body assembly and not a separate, serviceable sensor. So yes, the 2013 Accord absolutely uses throttle position sensors—just built in rather than bolted on as a standalone part.

On this Accord, the TPS pair constantly reports the throttle plate angle to the engine computer, helping it balance air, fuel, spark and idle speed. The dual sensors add redundancy, and the computer cross-checks them against the accelerator pedal sensors for safety. When all is well, the car idles smoothly, responds crisply to the right foot, and keeps emissions tidy.

If the TPS signals go out of range or don’t agree with each other, drivers may see a Check Engine light, poor throttle response, high or low idle, stalling, or limp-home behaviour. Common fault codes include P0121–P0123, P0222–P0223 and P2135.

Maintenance is straightforward. There’s no routine replacement interval for the TPS on a 2013 Accord, because it’s built into the throttle body. During regular servicing (say every 60,000–100,000 km), inspect the throttle body and connector for oil or coolant contamination, moisture, and damaged wiring. A gentle clean of the throttle bore and plate with throttle body-safe cleaner can help keep idle stable—don’t force the plate open by hand, and avoid harsh solvents.

When a TPS fault is confirmed, the fix is to replace the throttle body assembly (includes the throttle actuator and both TPS sensors). Use a new gasket, torque fasteners to spec, and check the harness and earths. After replacement—or after a battery reset—perform the Honda idle learn/throttle position relearn so the ECU can calibrate the new part. Many scan tools can command this, otherwise, the manual method is to warm the engine fully, turn all loads off (A/C, lights, fans), and let it idle undisturbed for several minutes so the ECU relearns the baseline. Both the 2.4L four and 3.5L V6 Accords follow the same approach.

• Watch for intermittent surging or sudden limp mode—book it in before a long drive.
• If cleaning doesn’t settle the idle and codes return, plan for a throttle body replacement.
• Always finish with an idle learn to avoid rough idle or stalling under the bonnet.

Popular questions about 2013 Honda Accord throttle position sensors

Does a 2013 Honda Accord have a replaceable throttle position sensor?
The car does have throttle position sensors, but they’re built into the electronic throttle body and aren’t sold as a separate sensor. If the TPS fails, the fix is to replace the throttle body assembly. There are also accelerator pedal position sensors at the pedal, which are separate components.

Do you need to program anything after changing the throttle body/TPS?
Yes. After replacement or after a battery reset, an idle learn/throttle position relearn is required so the ECU can calibrate the new throttle body. A scan tool can run the procedure, or it can be done manually by warming the engine and letting it idle with all accessories off for several minutes.

What fault codes point to a TPS issue on a 2013 Accord, and is it safe to drive?
Codes such as P0121, P0122, P0123, P0222, P0223 or P2135 often indicate TPS correlation or range problems. The car may enter limp mode. It might still drive, but it’s not wise to continue—throttle response can be unpredictable. Get it diagnosed and sorted promptly.