What causes Mercedes Benz to run with p0170 and p0173?
If you clear the P0170 and P0173 without fixing the underlying problem those two codes will return in a couple of days. Under certain circumstances such as vacuum leaks, the car may run fine even if the CEL light is on and P0173/P0170 are present. The most common cause of P0170 and P0173 on a Mercedes-Benz is a defective mass-airflow sensor.
What causes a p0170 fuel trim malfunction?
It may also have a P0173 referring to the same malfunction but on bank two. Symptoms of a P0170 DTC may include: Potential causes include a vacuum leak, unmetered air leaks Fuel saturated engine oil Leak in turbo air charge hoses (if equipped) Possibly bad O2 sensor (If Mercedes, may require adaptation with M-Benz compatible scan tool.)
What does a p0170 mean on a PCM?
When the fuel trims reach their rich correction limit, the PCM (Powertrain Control Module) sets a P0170, indicating a problem or malfunction in the fuel trims. It may also have a P0173 referring to the same malfunction but on bank two. Symptoms of a P0170 DTC may include:
What is the O2 sensor on Nissan p0170?
Recently the car threw a code while I was out of town. The Nissan code 0115 which converts to P0170 which is fuel system too lean, bank 2. The O2 sensor on that bank is very new because I got a code for that earlier. The car is running very rough and
If you clear the P0170 and P0173 without fixing the underlying problem those two codes will return in a couple of days. Under certain circumstances such as vacuum leaks, the car may run fine even if the CEL light is on and P0173/P0170 are present. The most common cause of P0170 and P0173 on a Mercedes-Benz is a defective mass-airflow sensor.
What does p0173 mean on a DTC code?
When the fuel trims reach their rich correction limit, the PCM (Powertrain Control Module) sets a P0173, indicating a problem or malfunction in the fuel trims. It may also have a P0170 referring to the same malfunction but on bank one. Symptoms of a P0173 DTC may include:
Why do I have two Mercedes Fault codes?
In theory, these two codes mean that the fuel mixture is too rich or too lean. Most of the time these Mercedes-Benz fault codes are caused by a defective Mercedes Mass Air Flow Sensor (MAF) sensor. You can try cleaning the sensor but that doesn’t always work.
What are the diagnostic codes for Mercedes Benz?
Mercedes-Benz Diagnostic Trouble Codes (DTC) for 1996+ models Powertrain P0100 Mass or Volume Air Flow Circuit Malfunction P0101 Mass or Volume Air Flow Circuit Range/Performance Problem P0102 Mass or Volume Air Flow Circuit Low Input P0103 Mass or Volume Air Flow Circuit High Input P0104 Mass or Volume Air Flow Circuit Intermittent
When the fuel trims reach their rich correction limit, the PCM (Powertrain Control Module) sets a P0173, indicating a problem or malfunction in the fuel trims. It may also have a P0170 referring to the same malfunction but on bank one. Symptoms of a P0173 DTC may include:
Can you read the fault code on a Mercedes Benz?
Can read fault codes from multiple systems such as transmission, engine, ETS, airbag and more. Can clear fault codes. Can read and erase all fault codes on Mercedes-Benz cars. Only works on MB but can perform further troubleshooting including SBC brake systems, convertible systems, Air Conditioner (A/C) system. 3. Mercedes-Benz Star Diagnostic DAS
What does the Check Engine light on Mercedes mean?
Mercedes-Benz owners may notice the check engine light plus P0170 and P0173 codes. In theory, these two codes mean that the fuel mixture is too rich or too lean.
Can read fault codes from multiple systems such as transmission, engine, ETS, airbag and more. Can clear fault codes. Can read and erase all fault codes on Mercedes-Benz cars. Only works on MB but can perform further troubleshooting including SBC brake systems, convertible systems, Air Conditioner (A/C) system. 3. Mercedes-Benz Star Diagnostic DAS
Where is the service button on a Mercedes C230?
Locate the left and right arrow buttons on the left side of your steering wheel. Press either button until the mileage is displayed on the instrument panel display screen. Press the up or down button until the service symbol appears on the screen.
What are the Mercedes codes for C class?
This issue can affect any Mercedes-Benz model including C, E, S, ML, GL, CLK, GLK, SLK, GLE classes. Other codes that you may get are P0130, P0135. If you clear the P0170 and P0173 without fixing the underlying problem those two codes will return in a couple of days.
What are the symptoms of a p0170 DTC?
Symptoms of a P0170 DTC may include: Potential causes include a vacuum leak, unmetered air leaks Fuel saturated engine oil Leak in turbo air charge hoses (if equipped) Possibly bad O2 sensor (If Mercedes, may require adaptation with M-Benz compatible scan tool.) Oil contamination in MAF connector or O2 sensor connectors.
When the fuel trims reach their rich correction limit, the PCM (Powertrain Control Module) sets a P0170, indicating a problem or malfunction in the fuel trims. It may also have a P0173 referring to the same malfunction but on bank two. Symptoms of a P0170 DTC may include:
What does it mean when your fuel trim code is p0170?
In writing this article I’ve added Mercedes-Benz-specific info since it seems that M-B (and VW) are most prone to having this P0170 surface along with misfire codes or other fuel trim codes. P0170 means there was a malfunction in the computer’s control of the air:fuel ratio.
What causes a Mercedes Benz to have a p0170 code?
P0170 and P0173 Code Causes The most common cause of P0170 and P0173 on a Mercedes-Benz is a defective mass-airflow sensor. The MAF sensor gets dirty over time triggering the CEL and the two codes.
What does the fuel trim code p0170 mean?
The code P0170 refers to a problem with the computer control of the air fuel mixture. This is called Fuel Trim. Code P0170 means that the Fuel Trim has reached its limit for compensating for a RICH Fuel Mixture. There are several reasons for a rich fuel mixture problem.
Mercedes-Benz Diagnostic Trouble Codes (DTC) for 1996+ models Powertrain P0100 Mass or Volume Air Flow Circuit Malfunction P0101 Mass or Volume Air Flow Circuit Range/Performance Problem P0102 Mass or Volume Air Flow Circuit Low Input P0103 Mass or Volume Air Flow Circuit High Input P0104 Mass or Volume Air Flow Circuit Intermittent
This issue can affect any Mercedes-Benz model including C, E, S, ML, GL, CLK, GLK, SLK, GLE classes. Other codes that you may get are P0130, P0135. If you clear the P0170 and P0173 without fixing the underlying problem those two codes will return in a couple of days.
What is the Mercedes Benz check engine light code?
Mercedes Codes P0170 P0173. Mercedes-Benz owners may notice the check engine light plus P0170 and P0173 codes. In theory, these two codes mean that the fuel mixture is too rich or too lean.
Why do I keep getting Mercedes Fault codes?
Most of the time these Mercedes-Benz fault codes are caused by a defective Mercedes Mass Air Flow Sensor (MAF) sensor. You can try cleaning the sensor but that doesn’t always work. It is best to replace the sensor. If the codes remain it is possible you have a vacuum leak.
What are the Mercedes codes for vacuum leaks?
Other codes that you may get are P0130, P0135. If you clear the P0170 and P0173 without fixing the underlying problem those two codes will return in a couple of days. Under certain circumstances such as vacuum leaks, the car may run fine even if the CEL light is on and P0173/P0170 are present.
Mercedes Codes P0170 P0173. Mercedes-Benz owners may notice the check engine light plus P0170 and P0173 codes. In theory, these two codes mean that the fuel mixture is too rich or too lean.
Most of the time these Mercedes-Benz fault codes are caused by a defective Mercedes Mass Air Flow Sensor (MAF) sensor. You can try cleaning the sensor but that doesn’t always work. It is best to replace the sensor. If the codes remain it is possible you have a vacuum leak.
Other codes that you may get are P0130, P0135. If you clear the P0170 and P0173 without fixing the underlying problem those two codes will return in a couple of days. Under certain circumstances such as vacuum leaks, the car may run fine even if the CEL light is on and P0173/P0170 are present.
What does fault code p0301 through p0312 mean?
If you are reading fault codes such as P0301 through P0312, that means that most likely the problem is with one of the cylinders misfiring. This is due to a bad spark plug, spark plug wire or ignition coil issue. If you are reading a P0301 through P0312 code plus another code, let say P0100.
Why does my Mercedes a class not have an ECU?
Mercedes A-Class ECU & Air Mass Meter rebuild. This ECU is a very common problem for the Mercedes A-Class, which causes fault codes blaming the air mass/ flow meter and can cause poor idle speed and/or rough running.
What to do if your Mercedes has a code of p0100?
Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins. Before replacing the mass air flow sensor, try replacing the air filter and cleaning the air flow sensor with low compress air or mass air flow sensor cleaner. Reset code and drive vehicle.
Where do you find the Mercedes Fault code?
P0102 Mass or Volume Air Flow Circuit Low Input P0103 Mass or Volume Air Flow Circuit High Input P0104 Mass or Volume Air Flow Circuit Intermittent P0105 Manifold Absolute Pressure/Barometric Pressure Circuit Malfunction
What are the Mercedes OBD-II Diagnostic Trouble Codes?
This is the list of Mercedes specific OBD-II Diagnostic Trouble Codes (DTC’s) that are used by Mercedes to diagnose the vehicle problems. This codes are presented for information only. You can always refer to the list of Standard or generic OBD-II DTC. P1105 Atmospheric pressure sensor Readout too large.
What is the fault code for a Mercedes fuel temperature sensor?
P0185 Fuel Temperature Sensor B Circuit Malfunction P0186 Fuel Temperature Sensor B Circuit Range/Performance P0187 Fuel Temperature Sensor B Circuit Low Input P0188 Fuel Temperature Sensor B Circuit High Input P0189 Fuel Temperature Sensor B Circuit Intermittent
Can a bad O2 sensor cause a p0170?
A bad O2 sensor could cause a P0170, or P0173. Repair cause of oil leak and replace oil-fouled O2 sensor. Please help me i have my 2000 montero sport xls and i have code p0125 and p0173 please help dont have idea about cars.
What are the setting conditions for p0173 fuel trim malfunction?
It is more common to see P0171, 0174, 0172, 0175 codes set with regard to fuel trim malfunctions on American cars. There is very little information on the setting conditions for a P0173, or P0173, but what information that is available almost seems to be a redundancy of the P0171,4,2 & 5 setting conditions.
A bad O2 sensor could cause a P0170, or P0173. Repair cause of oil leak and replace oil-fouled O2 sensor. Please help me i have my 2000 montero sport xls and i have code p0125 and p0173 please help dont have idea about cars.
It is more common to see P0171, 0174, 0172, 0175 codes set with regard to fuel trim malfunctions on American cars. There is very little information on the setting conditions for a P0173, or P0173, but what information that is available almost seems to be a redundancy of the P0171,4,2 & 5 setting conditions.