We received a check engine light and used our code reader to see 300, 301, 306, and 171. We replaced all the coils, cleaned the MAF and throttle body and idle air control valve....still has a check engine light and getting the same codes. Any suggestions?
Well code 300 is a random miss, 301 is for cylinder 1 and 306 is for cylinder 6. Code 171 is saying the fuel mixture on bank one is too lean. And that could cause the other codes.
Have you checked fuel pressure and the filter ?
SOURCE: check engine light fault code PO505
This code is for your electronic throttle control system it probably needs to be cleaned the butter fly sticks due to build up in side the throttle body clean with tooth brush and emission save throttle body cleaner clear codes and then dissconnect the battery for 3 hours hook back up then go for a short drive stop and go to reset idle control that should take care of this.
SOURCE: 1997 Toyota Camry 4 cyl., When driving it stalls
Get a timing light and check it.If the mark is jumping all over the place, your belt has jumped a cog and will need to be replaced.
SOURCE: My check engine light is on and I received code
Not sure where you got that definition for that code but this is what it is and means with possible causes for whichever motor you have:
Trouble Code: P1135 (2.4L L4 VIN - Auto)
A/F Sensor-11 (Bank 1 Sensor 1) Heater Circuit Malfunction
Print this code data
Number of Trips to Set Code: 2
OBD II Monitor Type: CCM Details
Indicators: MIL Details
Trouble Code Conditions:
Engine started, engine running, and the PCM detected the A/F Sensor-11 (A/FS-11) heater current was less than 0.25A, or that it was more than 8.0A at anytime during the CCM test.
Possible Causes:
2001 Toyota Highlander - I4 - P1135, P1155
Trouble Code: P1135 (3.0L V6 VIN - Auto)
A/F Sensor-11 (Bank 1 Sensor 1) Heater Circuit Malfunction
Print this code data
Number of Trips to Set Code: 2
OBD II Monitor Type: CCM Details
Indicators: MIL Details
Trouble Code Conditions:
Engine started, engine running, and the PCM detected the A/F Sensor-11 (A/FS-11) heater current was less than 0.25A, or that it was more than 8.0A at anytime during the CCM test.
Possible Causes:
2001 Toyota Highlander - V6 - P1135
SOURCE: on a 04 camry with 2.4 ltr engine, can I replace
I think the terms "Throttle Positon Sensor", TPS and "Throttle Body" can be misleading at least in regards to the 04 Camry.
My 04 Camry gave a diagnostic reading of P2121 for my problem "Throttle PEDAL position switch D circuit". However, we changed out the complete Throttle Body/TPS (Toyota Part #22030-0H020) that did NOT fix problem.
The 04 Camry TPS Electronic Module "Throttle Positon Sensor" is factory assembled and riveted to the side of the throttle body. The only way to service/inspect it would be to cut off or drill out the rivets. Not sure you could open the darn thing if you got it off, but that seems to be the only way Toyota sells them!!
Hopefully a new Throttle PEDAL Position Sensor (Toyota Part # 78010-33010 PEDAL ASSY, ACC)
will fix it. This is located under the dash near the accelerator pedal.
So, now I would recommend FIRST to replace the "Throttle PEDAL Positon Sensor" (it is much, much cheaper) and then the Throttle Body/TPS assembly!! Unless of course, you get a diagnostic code as you did for "faulty throttle body!!
SOURCE: I have a 2004 Toyota Corolla and my check engine
P0505 is correct, but replacing the IAC won't help if the PCM cannot control and/or monitor the operation
you need to measure voltage at the IAC and/or the signal return to the PCM
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