P2118 - No Start (most of the time)

TideNTNTideNTN Member Posts: 1
edited April 2024 in Honda

Trying to figure out next steps on this. Problem started a couple weeks ago.

The car is a 2010 Honda Accord with about 180k miles.

Couple weeks ago, my wife said the car struggled to start. I looked at the dash and saw no warning lights. I checked the battery and it was a little low, so I replaced it.

I tried starting the car after changing the battery and noticed a green key light flash and a check engine light. When I tried starting it, it would attempt to start but never turn over.

Green light means the car isn’t detecting the correct key. I ran the code and got P2118 which is - Throttle Actuator Control Motor Current Range/Performance

Car has 1 original key and 1 valet key. Both keys had the same result. Would take 6-7 tries before car would actually start.

Here’s what I’ve done:

  • I replaced the throttle body and did relearn procedures
  • I had an extra key cut and programmed it (been wanting a second one) and this key gives same results as the original and valet.
  • I checked the fuses for the ignition and throttle body
  • I checked the relay that controls the ignition and all other starting components

I hooked my reader up to read the data as it was idling.

Throttle Position B was at 30% at idle. Range is suppose to be 0-14

Throttle Position D was at 20% at idle. Range is suppose to be at 0-14.

Any ideas on next steps or what I should check?

Appreciate it!

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