Customer: Hi; Im getting F1, E3, E4 codes on my c25ci bmw. E46 series 2002. I replaces all ignition coils an spark plugs. What else should I check Mechanic's Assistant: How many miles are on the car? When was the last time the plugs were changed?

Customer: 2001 bmw 325ci 113,225 mileage fault codes E3 and E4. After following suggestions from a previous owners similar problem I replaced the mass air flow sensor, I found no indication of cracks or vacuum leaks as also suggested in the answer.

bmw 2002 330i, keep getting e3-e4 codes, changed o2 inboard sensors already. can not find any vacumn leaks. did have

May 6, 2020 · I have two BMWs both with the service engine soon light on. I have a Bavarian Autosport code reader and it reads as follows: 2002 BMW 325i 4 door sedan: codes E3 and E4; O2 sensor adaptation limit - s … read more

E4 Fuel trim bank 2, permissible range exceeded E3 Fuel trim bank 1, permissible range exceeded BMW Mechanic: Keiphun Sowell Does it have numbers attached with each code like P1000 OR Q1000

Adam | BMW master tech,ASE certified master tech,Associates in automotive technology,BMW ACT winner 80 Satisfied Customers Fuel trim, permissible range exceeded bank 1 and 2.

Customer: Second Opinion] I have been trying to resolve a problem with my 1998 BMW M3. It has 190k on the clock. This is a continuation of our session from last week. I have been plagued with E3/E4 Fuel Adaption limits for bank 1-3 and bank 4-6. You suggested I …

BMW Mechanic: Steve These codes are most commonly set by an air leak.Unmetered air leaks allow excess air into the engine and cause the fuel/air mixture to go out of alignment.The definitive test for such leaks is a smoke test, but you can also check at home using a less precise method.

2003 BMW 330XI E3 & E4 DTC Code. The car runs fine but what do these codes typically mean? 5.6.2020. Steve.

I have a 2001 BMW x5 3.0i and the code is reading e4 fuel trim bank 2, permissible range exceeded, It starts the same as Mechanic's Assistant chat Customer: I have a 2001 BMW x5 3.0i and the code is reading e4 fuel trim bank 2, permissible range exceeded Mechanic's Assistant: Has the vehicle turned into a gas hog?