Is there a problem with the exhaust temperature sensor?
This problem is often caused by a defective exhaust temperature sensor (also known as B19, B19/9, the sensor which may have various part numbers such as A005 153 40 28 or A007 153 74 28, A 005-153-45-28, A 007-153-63-28. Call your Mercedes-Benz dealer and provide the VIN to verify the part number.
Is there an exhaust temperature sensor on a Mercedes Sprinter?
There are two to three exhaust temperature sensors on Mercedes diesel models and Dodge Sprinters. Which sensor needs to be replaced depends on the fault code. Mercedes Exhaust Temperature Sensor Loosen the 17mm nut and pull it away from the sensor. A stubby 17mm wrench makes removing the sensor much easier.
What happens when an EGR temperature sensor fails?
When the temperature rises, the EGR temperature sensor will send a signal to the computer that will increase the flow in order to reduce pressure and temperature of the system. When the sensor fails or has any issues it can cause problems with the EGR system, which can lead to failed emissions test and other issues.
How does an exhaust gas temperature ( EGT ) sensor work?
Here we have several different examples of EGT sensors. The EGT sensor is responsible for reading the temperature of the exhaust, sending this information back to the ECU, which will then use the information to properly control the exhaust after-treatment system reducing harmful emissions.
Why is my exhaust temperature sensor out of range?
Went to the VW dealer to check the fault code. Apparently, the first exhaust temperature sensor is out of range, and this is what triggers the check engine signal. Their diagnostic: 1st sensor 150C (approx 300 F), the other three exhaust sensors in the low 200F range – the temperature difference is what triggers the CEL.
What are the symptoms of a bad EGR temperature sensor?
The first symptom you will notice is that the check engine light illuminates. Any problem with the engine or sensor causes the check engine light to illuminate indicating that the car should be taken for diagnosis. 2. Knocking Sound from Engine One of the first problems you will notice is that the engine starts making a knocking sound.
How much does it cost to replace an exhaust temperature sensor?
Their diagnostic: 1st sensor 150C (approx 300 F), the other three exhaust sensors in the low 200F range – the temperature difference is what triggers the CEL. Their recommendation: replace the 1st sensor. Estimate: 6 hours labor ( not easy to work in that area) – cost about $900 (sensor costs $300).
Here we have several different examples of EGT sensors. The EGT sensor is responsible for reading the temperature of the exhaust, sending this information back to the ECU, which will then use the information to properly control the exhaust after-treatment system reducing harmful emissions.