code 511 and 157

[ShoGuy93]

Ok i went to autozone and got my codes pulled and they got those codes. They gave me the print outs of each code.. But i still really don't understand what both of those codes mean.. If some one could explain them for me and or tell me what i need to fix tat would be great.. I'm just really baffled by these's codes...

Thanks

 

[masho95]

Well the 511 code is EEC processor ROM test failure. Which could mean there is a failure with the EEC computer, and a replacement is needed. The 157 code could be a MAF sensor problem or even something related to the EEC failure where it's not reading the correct voltage from the sensor. If you have the means to swap the EEC computer with a working unit, I'd try that first and see what you get.

 

[AutoSHO]

masho95:
Well the 511 code is EEC processor ROM test failure. Which could mean there is a failure with the EEC computer, and a replacement is needed. The 157 code could be a MAF sensor problem or even something related to the EEC failure where it's not reading the correct voltage from the sensor. If you have the means to swap the EEC computer with a working unit, I'd try that first and see what you get.

The 511 code is his LPM. The EEC is fine.

Sounds like the MAF isn't giving the correct voltage. Do you have a K&N filter? If so, your MAF filaments are most likely fouled by the filter oil, and that is why it is giving a bad reading. Try cleaning it with a gentle spray of electrical contact cleaner.

 

[ShoGuy93]

yes i do have a K&N filter. I'll try cleaning the maf with some electrical contact cleaner tommorow. Thanks guys!! thumb

<small>[ October 29, 2003, 02:28 PM: Message edited by: ShoGuy93 ]</small>