OBD Guide
ENFRDEESPT

P1100

Mass Air Flow Sensor Intermittent

P1100 is an OBD-II diagnostic trouble code meaning: Mass Air Flow Sensor Intermittent. Common causes: malfunction of the mass air flow sensor, damage to the wiring or connector of the air flow sensor. Estimated repair cost: $33–167.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$33–167 (est.)

Symptoms

  • Unstable engine idling
  • Dips during acceleration
  • Increased fuel consumption
  • Check Engine Light Illuminates
  • Reduced engine power

Causes

  • Malfunction of the mass air flow sensor
  • Damage to the wiring or connector of the air flow sensor
  • Contamination of the sensor sensing element
  • Air leak after mass air flow sensor
  • Sensor power problems

How to Fix

  1. Check the condition of the MAF connector and wiring
  2. Clean the contacts of the sensor connector
  3. Check the tightness of the air duct
  4. Test the sensor with a multimeter
  5. If necessary, replace the mass air flow sensor

Related codes

P0100P0101P0102P0103

Error P1100 by Vehicle Brand

FordLexusLincolnMazdaMercuryMitsubishiSubaruToyota

FAQ

What does the P1100 code mean?

P1100 is an OBD-II diagnostic trouble code that indicates: Mass Air Flow Sensor Intermittent

What causes a P1100 error code?

The most common causes of P1100 include: Malfunction of the mass air flow sensor; Damage to the wiring or connector of the air flow sensor; Contamination of the sensor sensing element; Air leak after mass air flow sensor.

How do I fix a P1100 diagnostic trouble code?

To fix P1100: Check the condition of the MAF connector and wiring. Clean the contacts of the sensor connector. Check the tightness of the air duct. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1100?

Yes, but get it checked soon

How much does it cost to fix P1100?

The estimated repair cost for P1100 is $33–167. Actual cost depends on your vehicle, location, and labor rates.

FRDEESPT

See also: Russian version · NationStat