Generally speaking, the bulk of this coverage expires after 3 years and 50k miles. What are the symptoms of the P0418 code? Jan 22, 2016 the easiest way to locate it , follow the positive battery cable down to it, they are a bear to replace,, last thing I saw on them was you had to remove windshield wiper arms and all kinds of stuff to get to them heres what a guy listed on his 2006 If your Tundra has a 4. Was the vehicle bought from the dealer? Careful as not to damage the threads. Symptoms of this code include and at startup and while idling. Be sure to check for parts online before authorizing this repair. This is a common problem throughout 4runners that is not covered under extended warranty for some reason. Use a wire tie to keep the new hose assembly away from the engine.
What To Do If Your Tundra Has This Problem 1. The cel shows the p2445 now as pending, but the hard fault is the p0418. Air injection is used to improve cold-start emissions, a federally-mandated emissions requirement. What could be causing this code? Using scan tool, check Secondary Air Pump Motor V101 in scan tool Output Diagnostic Test Mode Secondary Air Pump Relay activation mode. The image below shows a simplified schematic drawing of a typical secondary air injection system. It is not impossible and I did it and save about 600.
I first replaced the pump and within a week of dry weather driving the light came back on. With the engine warm and the truck in park and running, pull out dipstick, wipe it clean, replace, then pull out and check level. This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. The air is pulled from essentially the same place that the air intake pulls fresh air, an area that is designed to stay mostly dry and free of moisture. The Powertrain Control Module grounds the Air pump relay control circuit which energizes the Air pump. On six cylinder engines, tie to an available hole in the radiator fan shroud.
Connect new inlet hose to pump inlet. Engine must be cold to perform following test procedure. This information can be of use should an intermittent fault be diagnosed later on. The vehicle service manual should be consulted for more information on possible causes of the fault, along with required testing. Check Secondary Air Injection Valve N112.
Connect the remaining hose to the shut off valve. By injecting fresh air into the exhaust stream, the catalytic converters will heat up more quickly and therefore become more effective at scrubbing exhuast gases. Vacuum is then applied to both Air combination valve diaphragms which opens the shut off valves. Ensure engine is mechanically sound. Pull over, retighten it, and take a look at the cap to see if it has any cracks in it.
Note that this is a rare event, and the fault must be sought elsewhere before any control module is replaced What are the symptoms of code P0418? If you bought your vehicle in and live in the states of California, Maine, Massachusetts, or Vermont, your 07+ Tundra may be covered by state-mandated emissions warranties. An air pump is used on the vehicle to lower tail pipe emissions on start-up. If motor runs and no air exits secondary air pump motor, replace faulty Secondary Air Pump Motor V101. Some parts may be covered for 7 years or 70k miles. Most modern applications use a dedicated air pump to slightly compress ambient air, before blowing it into the exhaust manifold s to aid in oxidizing harmful exhaust emissions.
Command the air pump on with a scan tool. Connect electrical connector for solenoid to connector on the new hose assembly. Another indication of a problem with the secondary air injection system is abnormal noise generating from the components. The causes of a P0418 trouble code often occur during cold weather and include water entering the secondary injection valve system via a faulty one-way check valve. How does a mechanic diagnose the P0418 code? Some other causes include wiring and connectors becoming burnt by high-temperature engine exhaust and an overloaded circuit, resulting in a blown fuse.
This causes the ignition coil to provide a spark and the injector to inject fuel into each cylinder at the right time. So you should chech it on our car models. Here's some info I found on line, a step by step guide to diagnosing the secondary air injection system. The mechanic can use the manufacturer's service manual to determine fuse locations. It should come up near the area between the battery and the coolant bottle.