Code P2118, Traction and check engine lights on?

LPRINGLE88

MEMBER
2011 HONDA ACCORD
2.4L
4 CYL
AUTOMATIC
153,000 MILES

I have the car listed above and my trac light and check engine light is on. I took it to a local part store and tested it the code for the car was P2118 throttle body. I brought a new one and had it's still doing the same thing. I let it set a couple of days then went outside to try it everything was off the dash and the lights was on and it was driving fine by the time I went to the gas station and put gas in the gas top was very tight to open but I opened it filled it up with gas and when I crunk the car back up it was idling high and would not catch speed then the track light came back on and check engine do anyone know what may be going on with this car.

Thursday, September 5th, 2024 AT 6:07 AM

3 Replies

KEN L

MASTER CERTIFIED MECHANIC
51,603 POSTS

Even though the code is for the throttle body actuator I have seen the accelerator pedal position sensor cause this issue.

The P2118 code refers to a problem with the Throttle Actuator Control (TAC) Motor Current Range/Performance

Also, the throttle body needs a relearn procedure to work correctly

ECM/PCM Idle Learn Procedure

The idle learn procedure must be done so the ECM/PCM can learn the engine idle characteristics.

Do the idle learn procedure whenever you do any of these actions:

Replace ECM/PCM.
Reset ECM/PCM.
Update ECM/PCM.
Replace or clean the throttle body.
Disassemble the engine or the transmission.

NOTE: Erasing DTCs with the HDS does not require you to do the idle learn procedure.

Procedure

1. Make sure all electrical items (A/C, audio, lights, etc.) Are off.

2. Reset the ECM/PCM with the HDS.

3. Turn the ignition switch to ON (II) and wait 2 seconds.

4. Start the engine. Hold the engine speed at 3,000 rpm without load (A/T in P or N, M/T in neutral) until the radiator fan comes on, or until the engine coolant temperature reaches 194 °F (90 °C).

5. Let the engine idle for about 5 minutes with the throttle fully closed.

NOTE: If the radiator fan comes on, do not include its running time in the 5 minutes.

Here is how to swap out the accelerator pedal position sensor to help fix the problem. Clear the codes once completed. Check out the images (below). Please let us know what happens.

Image (Click to make bigger)