Q: My DPFE sensor burned up. What do you think caused this and will it do a new one the same way?

asked by on October 26, 2016

The car was losing power and just sounding funny that is when I found the burned up sensor.

My car has an automatic transmission.

Hi and thanks for contacting YourMechanic. The delta pressure feedback of EGR (DPFE) sensor was burned up for having too much back pressure on the engine.

A plugged catalytic converter or a plugged exhaust muffler will cause the engine to have excessive back pressure.

Also, a kink in the exhaust pipe will also cause excessive back pressure. As the pressure builds up, the engine exhaust temperature rises and will heat us the tubes that the DPFE registers and will cause it to melt. Put something on the end of the tail pipe and see if the engine exhaust will push it away.

If it does not push away or it is weak in force, then you may need the muffler or catalytic converter replaced. If you need further assistance diagnosing your exhaust system, then seek out a professional, such as one from YourMechanic, to help pinpoint the problem and guide you with repairs.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

I recently replace all my tires, once i get to about 50 mph my car shakes and the steering wheel shakes badly. what can it be. Som

If the problems all started after the tires were replaced then you may have had a weight come off or the tires are not balanced correctly. Have the tires rechecked by the installer to verify the tires are ok and...

Problem starting car and dies while driving

This sounds like it could be a faulty crankshaft sensor or a camshaft sensor. These engines had problems with both. The hard start and the backfire may be the camshaft sensor. The stall and no start condition may be from...

Rear shocks squeaking

It is a common problem with this car to have the key wear down and not trigger the tumblers in the key cylinder. The only fix would be to replace the key assembly and switch. I would suggest having a...

Related articles

How Long Does an Air Charge Temperature Sensor Last?
The The air charge temperature sensor, also referred to as the intake air temperature sensor, works to monitor the temperature of the air as it enters your car engine. The engine’s computer has to have this information so it can...
Symptoms of a Bad or Failing Low Water Sensor
If your car has low coolant without a warning, the Coolant Light comes on for no reason, or the car is overheating, replace the low water sensor.
How Long Do Wiring Harnesses Last?
Car wiring harnesses connect all the different electrical systems and components in a vehicle. Wiring harnesses can last the lifetime of the vehicle.