What does DTC P0505 mean? - 2003 Toyota Sienna

P0505 idle speed control valve, throttle motor or throttle valve sticking

http://www.stangnet.com/ima

ges/stories/docs/s197_TSBs/08-18-02.pdf

http://www.obd-codes.com/p0506

http://www.helpforcars.net/obd_codes/p0505_ford.html

P0505 - Idle Control System Malfunction P0420 - Catalyst System Efficiency Below Threshold (Bank 1)

google it or better get the FSM for your car, and read how to do the tests, that prove what causes each DTC.
505 idle speed failure.
351
http://www.obd-codes.com/p0351

there are 5 engines, so first find that out,.
351
ignition Coil # 1 Primary Circuit Peak primary circuit current not achieved with maximum dwell time.
this means the coil primary is open (other books show the fail is for too low current (open coil in COP)

505
Engine started; system voltage over 11.5v and the PCM detected an unexpected voltage condition on one or more of the IAC motor circuits for 2.75 seconds with the IAC motor active.

id fix the 351, cop coil , its probably bad, or bad connections to it.
then clean the iSC,
then reset all codes, with a scan tool
drive 20 miles or until CEL glows, driving and the rescan.

p0120 means you have a throtle position sensor problem could get expesive if throtle body is bad p0505 is same problem it means throtle idle controle valve problem hmm short bad ecm or bad throtle body hope this helps

P0505: Idle Air Control Valve System fault, Code P0505
-Vacuum leak
-Dirty throttle body
-IAC motor defective
-Poor electrical connection to the IAC valve, hope this helps and good-day !

Feb 7/11 - P0405

Jan 11/11 - P0336 - P0326

Dec 28/10 - P0217 - P0218 - P0163 - P0230 - P0231 - P0232

Dec 9/10 - Trouble Codes: P0170 - P0173 - P0162 - P0154 - P0142

Dec 6/10 - More DTC articles: P0157 - P0158 - P0160 - P0200

Nov 30/10 - DTC articles posted: P0505 - P0156

Nov 18/10 - More new articles: P0143 - P0144 - P0146 - P0147 - P0152

Nov 12/10 - P0120 - Throttle Position Sensor/Switch A Circuit Malfunction

Nov 11/10 - ECT Circuit Codes: P0116 - P0117

Nov 10/10 - P0111 - IAT Circuit Range/Performance Problem

Nov 7/10 - P0110 - Intake Air Temperature Circuit Malfunction

Nov 6/10 - P0108 - Manifold Absolute Pressure/Barometric Pressure Circuit High Input

Oct 21/10 - P0216 Injection Timing Control Circuit Malfunction

Sept 11/10 - Knock Sensor DTCs: P0327 P0332

Mar 15/10 - P0607 Control Module Performance Code

Mar 4/10 - P0606 PCM Processor Fault DTC

Feb 10/10 - New ECT Sensor article

Feb 9/10 - P0012 & P0022 - Camshaft Position - Timing Over-Retarded

Feb 2/10 - P0115 - Engine Coolant Temperature Circuit Malfunction DTC

Jan 19/10 - P0105 - MAP/Barometric Pressure Circuit Malfunction

After the IAC is replaced it is not enough to clear the code you must also reset the IAC learned adaptive. To do this you will need a higher end scanner like snap-on or such.

Hi there P0505 code is an idle control system malfunction.