NEED HELP! Codes!
NEED HELP! Codes! My car keeps throwing these 2 codes! I dont know why or what else I can do. The car has a new IAC and a new TPS and a new MAP sensors! Both codes are thrown at the same time. The codes are P0121 and P0507. Any help would be greatly appreciated!
Codes P0507 is "Idle Control System RPM Higher Than Expected"
P0121 is "A code P0121 may mean that one or more of the following has happened:
* TPS has intermittent open or short internally
* Harness is rubbing and causing an open or short in the wiring
* Bad connection at the TPS
* Bad PCM (less likely)
* Water or corrosion in connector or sensor"
All your grounds connected good ? Does it idle fast ? Did you notice anything when these codes started popping up ?
Do you have a way to test the sensors with some kind of scanner to verify their functionality?
Verify that your TPS is reading 0 volts when the TB is closed ....
P0121 is "A code P0121 may mean that one or more of the following has happened:
* TPS has intermittent open or short internally
* Harness is rubbing and causing an open or short in the wiring
* Bad connection at the TPS
* Bad PCM (less likely)
* Water or corrosion in connector or sensor"
All your grounds connected good ? Does it idle fast ? Did you notice anything when these codes started popping up ?
Do you have a way to test the sensors with some kind of scanner to verify their functionality?
Verify that your TPS is reading 0 volts when the TB is closed ....
Last edited by davidws6; Sep 26, 2009 at 06:02 AM. Reason: .
I'm thinking it's a wiring issue or a bad PCM. It started to do this after I got a mail order tune. Had it it dyno tuned since the mail order and it still throws the code randomly. I will check the wiring again.
So tonight I took the car out. Drove it over 100 miles and no light. Pulling into the garage it throws a check engine light. This time it's the P0507 light only. I'm getting so tired of this! Any more ideas?
