Hey guys, any help would be really appreciated with this! I'm Having some issues with my gf's Ka at the mo, its jerking when accelerating in 1st and 2nd gear and the engine light has come on. I ran a diagnostic test through the dash where you hold down the trip computer button and it gave the fault code "dt 412" .

Cant find a definitive explanation of the code but there seem to be 2 different definitions:

Either:

P0412 - Secondary Air Injection System (AIR) circuit malfunction The PCM attempts to control when air is injected in the exhaust. The DTC indicates a Secondary Air injection system AIR circuit fault. AIR circuit open
AIR bypass solenoid fault
Damaged PCM
AIR circuit short to power
Solid state relay fault
Damaged AIR pump
The AIR circuit is normally held high through the AIR bypass solenoid and SSR when the output driver is off. Therefore, a low AIR circuit indicates a driver is always on and a high circuit indicates an open in the PCM.

http://forums.focaljet.com/team-tech...-dtc-ford.html


Or:

412 (R) Idle speed system not controlling idle properly (generally idle too low) - ISC

http://www.troublecodes.net/Ford/

-------------------------------------------------------------------

Given the symptoms which are jerking while accelerating in 1st and 2nd gear, what is the more likely cause of the problem?

Thanks in advance for any help!

Ross

 

bump! ANy help would be much appreciated!

 

What year and what engine in the Ka?

 

its a 52 plate - 1.3 Endura-e engine

 

check for splits in the black rubber intake pipe between the ait box and throttle body ive had this before it causes air to fuel rasio to increase

 

Ive had a look Carlos, and its in good condition. im wondering if it could be the maf sensor? cant really think of what else! If anyone knows what the fault code 412 is that would be great!

 

412 = self diagnostic test, engine speed too high during test