Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Code P085, Idle Throttle Angle Too High: Notes
PCM continuously learns base idle position. This base idle position is the relationship of engine RPM to throttle position. PCM is limited to a fixed amount of learned throttle angle that it can apply. When this limit is reached, Code P085 will set. The cause of this increase in learned throttle angle is usually deposits in throttle body.
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.