Engine-Codes - BMW - P1161 BMW

P1161 BMW Code - Fuel Trim Adaptation Additive High Bank 2

- Code Popularity: 16,555 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents
ChatAC AutoCodes.com AI Chat

What are the Possible Causes of the DTC P1161 BMW?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Air leaks
  • Faulty Mass Air Flow (MAF) Sensor
  • Faulty Oxygen Sensor Bank 2
  • Low Fuel Pressure
  • Faulty Spark Plugs
  • Faulty Fuel Injectors
⚠ Does your BMW have Safety Recalls? → Check here

How to Fix the DTC P1161 BMW?

Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Search for P1161 BMW Questions and Answers: Search here →

What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the P1161 BMW code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

What Does the P1161 BMW Code Mean?

Short Term Fuel Trim (STFT) is a value that indicates how the Engine Control Module (ECM) is adapting the factory programmed fuel map. The fuel map is a lookup table that is referred to by the controller. This is used to govern the correct amount of fuel to inject. This amount depends on the speed and load conditions monitored on the vehicle. The STFT Value alters depending on which fuel map load cell the engine is operating during speed and load conditions.
The oxygen sensor is a key part of the fuel trim calculation. If the Oxygen sensor indicates a lean mixture, the STFT will be increased above the typical Value. If the Oxygen Sensor indicates a rich mixture the STFT will be reduced to below the typical Value. In normal operation, the fuel trim values will cycle between a maximum of 10 and -10%. STFT which exceeds this Value should be investigated.

P1161 BMW Code - Fuel Trim Adaptation Additive High Bank 2

Need more Information on the Code?

Need more information on how to fix the P1161 BMW code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1161 BMW code diagnosed by a professional: Find a repair shop in your area