Question

My 2004 Toyota Tundra 3.4L has check light codes C1241 and P0505, what is the meaning of the codes?

Answer 1

HI there

C1241 indicates a low battery charge. This could be the result of a bad battery or possibly the charging system.

C1241 TOYOTA - Low Battery Positive Voltage
Read more: https://www.autocodes.com/c1241_toyota.html

P0505 is a code for the idle air control system. Basically, if the engine is idling at an incorrect speed the computer will throw this code. Here is some info 

P0505 TOYOTA - Idle Air Control System
Read more: https://www.autocodes.com/p0505_toyota.html