2009. What are the probable causes of DTC C1280?

To clear the Permanent DTC using a dedicated monitor cycle, start by repairing the fault that caused the DTC in the first place. Then clear all the codes except for the permanent DTC (if it were that easy, there'd be no problems), and make sure the Permanent DTC is the only one left.

Code 412 means there is a problem with the Secondary Air Injection Solenoid Relay Control Circuit.
You will probably need a shop manual to get the diagnostic steps for that code.

P0449 Evaporative Emission Control System Vent Valve/Solenoid Circuit Malfunction

Check for good connection, else replace

I think that means there is a problem with the throttle body.

DTC P0455

• Evaporative Emission (EVAP) System Large Leak Detected

Refer to user manual or call Toyota Care..

Hello, There is not a recall for this issue,but there is a TSB (technical safety bulletin) by Hyundai for this issue that you are having with your vehicle for the code that was set. What this consists of is replacement of the throttle position sensor and performing an ECU software upgrade for the vehicles computer. The process usually takes about 45 minutes to an hour to perform at a Hyundai service department. If you are the original owner of the vehicle or it has less than 60,000 miles, this repair procedure is no cost to the owner. Hope this info helps. Gabe

Technical Service

Bulletin

Subject:

DTC P2135/P0638 OR COLD ENGINE RPM

FLUCTUATION - TPS REPLACEMENT &

ECM UPDATE

Group:
FUEL SYSTEM

Number:
10-FL-010

Date:
AUGUST, 2010

FUEL SYSTEM

10-FL-010

AUGUST, 2010
MODELS:

EN VERACRUZ, CM SANTA FE,

TG AZERA, EP ENTOURAGE,

NF SONATA, BH GENESIS

DTC P2135/P0638 OR COLD ENGINE RPM

FLUCTUATION - TPS REPLACEMENT &

ECM UPDATE

NOTE:

This bulletin revises TSB 09-FL-003-2 to add the Genesis Sedan (BH)

model to the applicability list. It also provides instructions to select the

most recent available ECM Update Events #166-178 or any higher event

numbers if they become available in the future.

DESCRIPTION:

Symptom/Condition:

Some 2.7L, 3.3L or 3.8L engines in models identified in the applicability list may

experience one or more of the following conditions:

• DTC P2135: Throttle position sensors 1/2 voltage correlation

• DTC P0638: Throttle actuator control range/performance

• RPM fluctuation while engine is cold (DTC not set)

NOTE:

Should either of the above DTC occur, the vehicle would have operated in

limited power "limp home" mode and stored the following DTC in the ECM:

• DTC P1295: ETC System Malfunction - Power Management

• DTC P2106: ETC System Malfunction - Forced Limited Power

APPLICABILITY:

• 2007-2009 EN Veracruz

• 2007-2009 CM Santa Fe

• 2006-2009 TG Azera

• 2007-2008 EP Entourage

• 2006-2009 NF Sonata with 3.3L Engine only

• 2009-2010 BH Genesis Sedan

p1400 is a egr valve malfunction which will cause misfire