How do I fix code P0402?

What repairs can fix the P0402 code?

1. Replacing the stuck open EGR valve.
2. Replacing a broken catalyst in the exhaust.
3. Replacing an EGR temperature sensor or cleaning the carbon off of it to repair it if it registers too much of a temperature change.
4. Replacing the EGR backpressure control valve.

Can I drive with a P0402 code?

You can drive it for as long as you want. I have the same code on mine and have driven about 2k miles.

Where is the vacuum switching valve on a Camry?

The Vacuum Switching Valve (VSV) is typically located on the engine (often under the intake manifold) or in the engine compartment, controlling a fixed air bleed into the intake manifold.

Why do I get a p0402 trouble code?

This may be because something is blocking the EGR valve from closing, because the valve itself is damaged, because of excessive vacuum in the valve, or (most likely) because of a faulty DPFE sensor. Thus, replacing the EGR valve should not be the first thing done to attempt a repair when a P0402 trouble code is given.

Which is the opposite of p0401 in Toyota?

P0402 Code – Toyota. Excessive EGR flow. P0402 is the “Exhaust Gas Recirculation Flow Excessive Flow Detected” code, and it’s basically the opposite of a P0401 code.

What causes the P0420 code on a Toyota Camry?

The P0420 code in a Toyota Camry will often be thrown one of your oxygen sensors are not functioning properly. Typically, the code will be triggered by the upstream oxygen sensor (before the converter). There aren’t usually any drivability issues associated with P0420.

Is there a problem with the EGR valve p0402?

With a P0402, it is common for people to replace the EGR valve, only to have the problem return. The most likely solution is to replace the DPFE sensor. Check the voltage at the DPFE sensor both at idle and when the EGR is open Related EGR codes: P0400, P0401, P0403, P0404, P0405, P0406, P0407, P0408, P0409