⚡ AUTO CODE FIX
🔍
EngineModerate✅ DIY Friendly

P0102

Mass Air Flow Circuit Low Input

MAF sensor signal voltage is lower than expected. The ECM thinks less air is entering than actually is.

SeverityModerate
CategoryEngine
Est. Repair Cost$50–$300
Code TypePowertrain
DIY RepairYes

⚡ Common Causes

⚠️ Symptoms

✅ How to Fix — Step by Step

  • Step 1:Clean MAF sensor
  • Step 2:Check wiring for short to ground
  • Step 3:Replace MAF sensor
  • Step 4:Check for air leaks
💡 Pro Tip: Low MAF signal often causes rich mixture — look for black smoke as confirmation.

Repair Cost Estimate

Full Repair Estimate
$50–$300
DIY Possible?
YES
Severity
Moderate

Frequently Asked Questions

What does OBD2 code P0102 mean?+
P0102 stands for Mass Air Flow Circuit Low Input. MAF sensor signal voltage is lower than expected. The ECM thinks less air is entering than actually is.
What causes code P0102?+
Dirty MAF sensor; Short to ground in MAF wiring; Faulty MAF sensor; Air leak after MAF
How do I fix code P0102?+
Clean MAF sensor; Check wiring for short to ground; Replace MAF sensor; Check for air leaks
How much does it cost to fix P0102?+
Estimated repair cost for P0102 is $50–$300.
Is P0102 DIY-friendly?+
Yes — P0102 is generally DIY-friendly with basic tools.

AI Diagnosis

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