OBD Guide
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P1102

Mass Air Flow Sensor In Range But Lower Than Expected

P1102 is an OBD-II diagnostic trouble code meaning: Mass Air Flow Sensor In Range But Lower Than Expected. Common causes: contamination or damage to the air flow sensor, air leak after mass air flow sensor. Estimated repair cost: $28–89.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$28–89 (est.)

Symptoms

  • Increased fuel consumption
  • Reduced engine power
  • Unstable idling
  • Difficulty starting the engine
  • Dips during acceleration

Causes

  • Contamination or damage to the air flow sensor
  • Air leak after mass air flow sensor
  • Sensor wiring problems
  • Dirty air filter
  • Engine control unit malfunction

How to Fix

  1. Check the condition of the air filter
  2. Clean or replace the mass air flow sensor
  3. Check the tightness of the intake system
  4. Check the integrity of the sensor wiring
  5. Test the sensor using diagnostic equipment

Related codes

P0101P0102P0103

Error P1102 by Vehicle Brand

KiaMazdaMitsubishiSubaruVolkswagen

FAQ

What does the P1102 code mean?

P1102 is an OBD-II diagnostic trouble code that indicates: Mass Air Flow Sensor In Range But Lower Than Expected

What causes a P1102 error code?

The most common causes of P1102 include: Contamination or damage to the air flow sensor; Air leak after mass air flow sensor; Sensor wiring problems; Dirty air filter.

How do I fix a P1102 diagnostic trouble code?

To fix P1102: Check the condition of the air filter. Clean or replace the mass air flow sensor. Check the tightness of the intake system. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1102?

Yes, but get it checked soon

How much does it cost to fix P1102?

The estimated repair cost for P1102 is $28–89. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat