What are the symptoms of P0102?

Common symptoms include: Reduced power; Rough idle; Check-engine light.

What causes a P0102 code?

The most common causes are: Failed MAF sensor; Open or shorted MAF wiring; Corroded connector; Severe intake restriction.

How do you fix P0102?

Inspect the MAF connector and wiring for opens/shorts; Compare live MAF data to a known-good value; Replace the sensor if the circuit checks out. Worth diagnosing soon — left alone, the underlying issue can grow into a bigger, costlier problem.

OBD-II Code Lookup

P0102Watch

MAF Sensor Circuit Low Input

Air system

The MAF signal is lower than possible — often a wiring, connector, or sensor fault rather than an actual airflow problem.

Worth diagnosing soon — left alone, the underlying issue can grow into a bigger, costlier problem.

Common symptoms

Reduced power
Rough idle
Check-engine light

Common causes

Failed MAF sensor
Open or shorted MAF wiring
Corroded connector
Severe intake restriction

How it's diagnosed & fixed

Inspect the MAF connector and wiring for opens/shorts
Compare live MAF data to a known-good value
Replace the sensor if the circuit checks out

Got P0102? Get it diagnosed.

A real technician can interpret P0102 in the context of your truck and symptoms — and tell you what's actually wrong before you buy parts.

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Related Air codes

P0101MAF Sensor Range/Performance P0106MAP/Barometric Pressure Sensor Range/Performance

Reference only. A trouble code names a symptom, not the failed part — always confirm with a live diagnosis before repairs. See our Knowledge Base for deeper guides.