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.
2000 Toyota MR2FACTORY OEM SERVICE PROCEDURE
DTC P0505: Idle Air Control System Circuit: Notes
NOTE:
On 2000 models, DTC applies to all models. On 2001 models, DTC applies only to models with standard type manual transaxle. On 2001 models, there are 2 types of manual transaxles used. A standard type manual transaxle and a sequential manual transaxle. A standard type manual transaxle is a common transaxle in which the driver operates the clutch and shifts the transaxle. A sequential manual transaxle is an electronic controlled manual transaxle in which the clutch is operated and transaxle is shifted hydraulically by moving the shift lever forward or backward. The sequential manual transaxle may be identified by the shift lever pattern and uses a special fluid in the fluid reservoir. Shift lever pattern consists of "R", "N", "S" and "+" in place of the conventional type shift lever pattern and no clutch pedal is used.
Factory Service Tools
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.