P1118 — Mass Or Volume Air Flow Circuit High Input Bank 2

What Does P1118 Mean?

P1118 is a manufacturer-specific diagnostic trouble code: Mass Or Volume Air Flow Circuit High Input Bank 2. This code applies to BMW, VOLKSWAGEN, FORD, LINCOLN, MERCURY vehicles. Unlike generic OBD-II codes, manufacturer-specific codes are defined by the vehicle maker and may only apply to certain makes and models.

Symptoms of P1118

⚠️ Check Engine Light (MIL) illuminated
⚠️ Mass Or Volume Air Flow reading stuck at maximum value
⚠️ Related system operating erratically or in default mode
⚠️ Reduced engine performance

Common Causes

🔍 Short to voltage in Mass Or Volume Air Flow wiring harness
🔍 Corroded or water-damaged Mass Or Volume Air Flow connector
🔍 Faulty Mass Or Volume Air Flow outputting maximum voltage
🔍 Damaged wiring rubbing against metal components
🔍 ECM/PCM internal fault (rare)

Frequently Asked Questions

What does P1118 mean?

P1118 indicates: Mass Or Volume Air Flow Circuit High Input Bank 2. The vehicle's computer has detected that the Mass Or Volume Air Flow is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code P1118?

You can drive short distances for essential trips, but schedule a diagnosis soon. Driving with P1118 for extended periods may cause additional problems.

How much does it cost to fix P1118?

Repair costs for P1118 typically range from $20 to $300, depending on the root cause. Simple wiring or connector repairs are on the lower end, while component replacement costs more. A proper diagnosis ($80–$150 at most shops) will identify the exact cause before committing to expensive parts.

What To Do Next

Possible Fixes

🔧 Inspect and repair Mass Or Volume Air Flow wiring for short to voltage
🔧 Clean or replace corroded Mass Or Volume Air Flow connector
🔧 Replace faulty Mass Or Volume Air Flow

1
Find your vehicle above
Click your make and model for real owner reports and common causes specific to your vehicle.
2
Check for recalls
Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.
3
Get a professional diagnosis
A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.

P1118: Mass Or Volume Air Flow Circuit High Input Bank 2