Recently purchased a 11 Sonata with 120k miles now check engine and traction light appears won't let me drive over 20mph I check it has multiple codes so I replaced the throttle body reset lights 2 weeks later same thing. Any Help? Codes: p0021 p0143 p1821 p2135 p2106 p0221 p2118 p2118

 

You have multiple codes. Most likely caused by one thing. I quickly looked up this:

What causes the P2118 code?

These are the most common causes of the P2118 code:

• Throttle actuator control motor failure
• Failed pedal position sensor
• Throttle position sensor faulty
• Open or short in the actuator circuit
• Poor electrical connection

I would be looking for a poor electrical connection, probably a ground connection. Check the grounding strap(s) between engine and body and anything else you can get your hands on.

 

Thanks I will check it out later thanks again

 

It sounds like the engine is going into "limp mode", to protect you , your vehicle and others.
I believe allegretto gave you good advice and agree with the suggestions he offered.