Question 1

What does P2176 mean?

Accepted Answer

P2176 - Throttle Actuator Control System — Idle Position Not Learned. PCM has not learned the throttle body closed (idle) position. Usually occurs after throttle body cleaning, replacement, or battery disconnect.

Question 2

What are the symptoms of P2176?

Accepted Answer

Check engine light, Erratic idle, Stalling, High or low idle

Question 3

What causes P2176?

Accepted Answer

Throttle body just cleaned or replaced, Battery recently disconnected, PCM recently reset, Throttle body relearn not performed

Question 4

How much does it cost to fix P2176?

Accepted Answer

Typical repair cost: $0. Perform a throttle body relearn procedure. On GM: turn key to ON for 15 seconds, turn off for 15 seconds, start engine and let idle for 5 minutes. Procedure varies by make.

P2176 — Throttle Actuator Control System — Idle Position Not Learned

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Common symptoms of P2176

Common causes of P2176

Repair cost & difficulty

Vehicles commonly affected

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