Im getting a EPC light and a check engine light on my 201...


Im getting a EPC light and a check engine light on my 2012 tiguan sel. Ive replaced the maf and put a throttle body from a 2010 tiguan in it and i ...

Im getting a EPC light and a check engine light on my 2012 tiguan sel. Ive replaced the maf and put a throttle body from a 2010 tiguan in it and i

Automotive Expert
Good Afternoon, my name is \*\*\*\*\* \*\*\*\*\* ill be helping you, so sorry to hear about the issues here on the Tiguan. I know how frustrating it can be to deal with warning lights coming on. Have we been able to verify what codes are setting with the CEL and EPC light? also does the vehicle show any symptoms when driving or running?

i have i will send a pic of the codes. And the car sometimes hesitates to accelerate and i cant go above 55 mph. It was misfiring, but after i replaced maf yesterday. It hasnt mifired since.

Here you go
Automotive Expert
quite a bit of codes here. they all seem to be related to the faulty MAF sensor. have we been able to clear the codes using a scan tool to verify the repair and see which ones come back? i dont see any issue related to the throttle body and with it no longer misfiring i would recommend we go ahead and clear the codes to see if we can get out of limp mode and if any of these issues come back.

Okay i havent cleared any of the codes from before i replaced the maf. I have a buddy with a obd scanner coming to help me reset the codes later today. Ill update this thread after i clear them
Automotive Expert
okay sounds good! i suspect that after clearing you will see a lot of improvement.

Okay thank you
Automotive Expert
no problem

Okay so we cleared the codes and then started the car and it started sputtering and misfiring again
Automotive Expert
ah okay if its misfiring with the new MAF sensor we would need to begin to start diagnosing this as a regular misfire. replace all plugs and verify that the ignition coils and fuel injectors are firing. if that checks out you can test compression next.

What others are asking

Front rotors are wearing way too fast
Brake performance and wear reduction are two very popular modification questions for most vehicles. There are many options available that can extend the life of the rotors and/or pads. Look for rotors that are drilled and/or slotted. These types of...
How do I know which side of the car the fuel tank is on?
Some cars have their gas tank on the driver side, and some on the passenger side. As a result, it can be hard to remember which side of the vehicle your fuel tank is on. The fuel gauge is designed...
Engine light with gas smell.
A fuel smell should be investigated immediately. As a fuel leak develops, it may leak on hot components which could start a fire. The fuel system needs to be thoroughly inspected to insure there are no hazardous leaks and any...
Wheel making rubbing noise
It is very possible that the wheel bearing is causing this issue. I would start by having a suspension inspection (https://www.yourmechanic.com/services/brakes-steering-and-suspension-system-inspection) performed by a qualified technician, such as one from YourMechanic. After a test drive, the technician will likely use...
Transmission slipping, gear warning on the dash
Hello. Let's hope that you don't have an issue with the mechanical aspect of the transmission on your 2002 BMW 330xi. I believe the best thing to check will be the transmission fluid (https://www.yourmechanic.com/services/transmission-fluid-service). Also, I suggest having a technician...
cold rough idle and P0303 code , run great after clearing code and warming up,
Code P0303 (https://www.yourmechanic.com/article/p0303-obd-ii-trouble-code-cylinder-3-misfire-detected-by-spencer-clayton_2) suggests a misfire in cylinder #3. This can happen for many reasons such as a vacuum leak (https://www.yourmechanic.com/article/is-it-safe-to-drive-with-a-vacuum-leak), weak fuel pump (https://www.yourmechanic.com/services/fuel-pump-replacement) (pressure), bad ignition coil (https://www.yourmechanic.com/services/ignition-coil-replacement), low voltage to the fuel injectors (https://www.yourmechanic.com/services/fuel-injector-replacement) (causing pulse problems)...
My check engine light came on AND my cruise control light started flashing, same exact time.
Hello. Subaru has designed their vehicles to turn on the cruise control light when their is a problem with the power train system. This keeps you from using the cruise control when there is a problem. If there is a...
TPMS Service light
Hello. Thank you for writing in. The vehicle is having issues recognizing the tires that were switched. These monitoring systems can be sensitive to changes and the smallest of damages. Chances are they just need to be reset. A technician...
Loud sound when eccelaratjng.
Hello Hazel, thank you for writing in. When the noise is associated with acceleration, then the issue is likely exhaust, transmission, or engine related. There is also the option that the RPMs are reaching higher levels before the vehicle shifts....