AutoCodes – BMW – P1118 BMW

P1118 BMW Code - Mass Or Volume Air Flow Circuit High Input Bank 2

Quick Answer

P1118 BMW indicates Mass Or Volume Air Flow Circuit High Input Bank 2. Common causes include Faulty Mass Air Flow Sensor, Mass Air Flow Sensor harness is open or shorted, Mass Air Flow Sensor electrical circuit poor connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P1118 BMW indicates Mass Or Volume Air Flow Circuit High Input Bank 2.
Common causes: Common causes include Faulty Mass Air Flow Sensor, Mass Air Flow Sensor harness is open or shorted, Mass Air Flow Sensor electrical circuit poor connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 6,282

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

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Table of contents Created and updated by William Orellana on Apr 24, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1118 BMW Description

OBDII Code P1118 BMW - Mass Or Volume Air Flow Circuit High Input Bank 2 - AutoCodes.com — P1118 BMW Code - Mass Or Volume Air Flow Circuit High Input Bank 2

What does this mean?

What are the Possible Causes of the DTC P1118 BMW?

Faulty Mass Air Flow Sensor
Mass Air Flow Sensor harness is open or shorted
Mass Air Flow Sensor electrical circuit poor connection

How to Fix the DTC P1118 BMW?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1118 BMW code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P1118 BMW code?

Need more information on how to fix the P1118 BMW code? Get Access to Factory Service Manuals

Need Help with the Code?

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P1118 BMW Code

What does the OBDII code P1118 mean on a BMW?

P1118 on a BMW refers to "Mass or Volume Air Flow Circuit High Input Bank 2," indicating an issue with the mass airflow (MAF) sensor on the second bank of the engine.

What are the common symptoms of the P1118 code on a BMW?

Symptoms may include decreased engine performance, rough idling, poor fuel economy, hesitation during acceleration, and the illumination of the check engine light.

What causes the P1118 code to be triggered on a BMW?

Common causes include a faulty MAF sensor, wiring or connector issues, air intake leaks, a clogged air filter, or a malfunctioning engine control module (ECM).

Can a dirty air filter cause the P1118 code on a BMW?

Yes, a clogged or dirty air filter can restrict airflow, potentially leading to incorrect MAF sensor readings and triggering the P1118 code.

How can you diagnose the P1118 code on a BMW?

Diagnosis typically involves inspecting the MAF sensor and wiring, checking for air intake leaks, testing sensor voltage with a multimeter, and scanning for related trouble codes.

Is it safe to drive a BMW with the P1118 code?

While the car may still be drivable, continuing to drive with this code can lead to decreased performance, poor fuel efficiency, and potential engine damage if not addressed.

How do you fix the P1118 code on a BMW?

Repairs may involve cleaning or replacing the MAF sensor, fixing damaged wiring or connectors, replacing a dirty air filter, or addressing any intake leaks.

Can cleaning the MAF sensor resolve the P1118 code?

Yes, if the MAF sensor is dirty, cleaning it with a specialized MAF sensor cleaner can sometimes resolve the issue.

What tools are needed to troubleshoot the P1118 code on a BMW?

Tools may include an OBDII scanner, a multimeter, MAF sensor cleaner, and basic hand tools to access and inspect the sensor.

How much does it cost to repair the P1118 code on a BMW?

The cost can vary, but replacing a MAF sensor typically ranges from $150 to $400, while cleaning or addressing minor wiring issues may cost significantly less.