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101F01 – BMW DTC

BMW DTC 101F01 – Air mass system, plausibility: calculated air volumes in air intake system implausible / Throttle valve opening angle – intake pipe absolute pressure, comparison Pressure too high

DTC 101F01 meaning on BMW

DTC 101F01 indicates a problem with the air mass system in BMW vehicles. This code signifies that the calculated air volumes in the air intake system are implausible when compared to the throttle valve opening angle and the absolute pressure in the intake pipe. Essentially, the engine control unit (ECU) has detected a discrepancy between expected and actual air intake values, which can affect engine performance and emissions.

BMW DTC 101F01 symptoms

Common symptoms associated with DTC 101F01 may include:

  • Reduced engine performance
  • Increased fuel consumption
  • Rough idling or stalling
  • Check Engine Light illuminated
  • Unusual engine noises

BMW DTC 101F01 causes

Several factors can lead to the triggering of DTC 101F01, including:

  • Faulty mass air flow (MAF) sensor
  • Vacuum leaks in the intake system
  • Clogged air filter
  • Faulty throttle body or throttle position sensor
  • Issues with the engine control unit (ECU)

BMW DTC 101F01 seriousness

DTC 101F01 is considered a serious issue as it can lead to:

  • Decreased engine efficiency
  • Increased emissions, potentially failing emissions tests
  • Long-term engine damage if not addressed

How to diagnose DTC 101F01 on BMW

To diagnose DTC 101F01, follow these steps:

  • Use an OBD-II scanner to confirm the DTC and check for any related codes.
  • Inspect the MAF sensor for dirt or damage.
  • Check for vacuum leaks in the intake system.
  • Examine the throttle body for proper operation.
  • Test the air filter for clogs and replace if necessary.
  • Verify the integrity of the wiring and connectors related to the MAF sensor and throttle body.

How to fix DTC 101F01 on BMW step-by-step instructions

To fix DTC 101F01, follow these steps:

  1. Clear the DTC using an OBD-II scanner.
  2. Inspect and clean the MAF sensor with appropriate cleaner.
  3. Check and replace the air filter if it is clogged.
  4. Inspect the intake system for vacuum leaks and repair as necessary.
  5. Test the throttle body and throttle position sensor for proper function.
  6. Reconnect all wiring and connectors securely.
  7. Start the engine and monitor for any reoccurrence of the DTC.

How to erase DTC 101F01 on BMW

To erase DTC 101F01, follow these steps:

  • Connect an OBD-II scanner to the vehicle’s diagnostic port.
  • Turn on the ignition without starting the engine.
  • Navigate to the DTC menu on the scanner.
  • Select the option to erase or clear the codes.
  • Confirm the action and wait for the scanner to complete the process.
  • Disconnect the scanner and start the engine to ensure the code does not return.

Recommended tools & DTC Scanners for BMW

Best Diagnostic App for modern BMWs: BimmerLink

Recommended Bluetooth adapter for Bimmerlink: OBDLink CX

Cable adapter for Bimmerlink: Enet Cable USB Type C

For older BMWs we recommend: Autel AutoLink AL319 (2024 version)

Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter

← All BMW Diagnostic Trouble Codes

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