Skip the auto shop - Our mechanics make house calls

Q: Code p0505

asked by on

My car has a cel on with code p0505. I tried replacing Iac valve. But the code is still keep coming. So then could be the problem with it?

My car has 120000 miles.
My car has an automatic transmission.

A: For the P0505 code, you should make sure th...

For the P0505 code, you should make sure that the PCV valve is clean or you should have the valve replaced. The throttle idle valve should be removed and throttle plates and IAC passages cleaned out. Make sure there is not vacuum leaks or problems from the MAF to the throttle body. Clear codes, disconnect battery for 10 minutes and then reconnect and have the computer relearn the idle speeds. If the trouble persists, have an expert come and diagnose the Check Engine Light more thoroughly. From there, they will be able to move forward with the appropriate repairs.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: My Check Engine Light came on and my car rattles horribly.

The catalytic converter will definitely cause a rattling sound when it is worn out or needing to be replaced, which will also cause your Check Engine Light to come on. There are small honeycomb like pieces inside the converter that...

Q: Can I go to a trip through the state with the following problems with my car?

You should ask the shop that gave you the estimate since they quoted you to replace the transaxle. The transaxle problem may be something that could leave you stranded and cost thousands of dollars to replace this part. The car...

Q: Car want start bit turns over rrrrr sounds when key is in the hole

Hello there, It sounds like you have a few different issues going on. I will address each individually but they all probably play together. It would appear your oil has sludge in it or has turned to sludge, Toyota's had...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...