What is a secondary air injection switching valve?
Definition. The AIR or Secondary Air Injection System Switching Valve is a valve controlled by the vehicle’s computer, which also controls the air injection into the engine’s exhaust system (this valve may be integral to the AIR pump). The PCM monitors the driver that activates the AIR pumps for faults.
What is Toyota secondary air injection system?
To decrease the level of emissions emitted from the tailpipe, the Pulsed Secondary Air Injection (or Air Suction) system is used to introduce air into the exhaust flow, thereby allowing combustion to continue well into the exhaust system. …
Which one of the following is a prime source of problems in secondary?
WATER is a prime source of problems in secondary air systems.
What does the p2440 code on a Toyota Tundra mean?
I have the P2440 code. It says Secondary Air Injection System Switching Valve Stuck, Open Bank 1. Is this the air pumps and is it covered under the 10 year, 150k warranty?
How does the p2440 Toyota air injection system work?
P2440 Toyota Description. To accelerate the activation of catalyst when warming up the engine, the air injection system pumps the secondary air to the exhaust manifold by pressure. The secondary air is supplied by the air pump and it is pumped to the exhaust manifold through the air switching valve.
How much does it cost to repair a p2440 Toyota?
The cost of diagnosing the P2440 TOYOTA code is 1.0 hour of labor. The auto repair’s diagnosis time and labor rates vary by location, vehicle’s make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.
What to do about stuck valve code p2440?
Fast forward 2019 at 170k miles, dashboard lights flashing and limp mode again with stuck valve code P2440. With the ECM software upgrade they did in 2015, will any of the bypass kits work?