How much does it cost to fix P2106?

DIY repair typically costs $50–$400 for parts. Professional repair runs $200–$1200 including parts and labor.

P2106

Powertrain

High

Throttle Actuator Control System — Forced Limited Power

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The P2106 code means the PCM has forced the throttle actuator control system into a limited power mode. This is a safety code — the PCM has detected a problem that could be dangerous at full power, so it restricts engine output to a reduced level, typically limiting the vehicle to around 25-45 mph. This is commonly known as 'limp mode' or 'reduced power mode.'

Unlike P2104 (forced idle, no acceleration) or P2105 (forced shutdown), P2106 allows limited driving — enough to get you off a highway or to a nearby repair facility. However, the vehicle will be severely underpowered and should not be driven in normal traffic conditions any longer than absolutely necessary.

The key to fixing P2106 is diagnosing the underlying code that caused the PCM to activate limited power mode. There will almost always be one or more additional codes stored that identify the actual failed component. Common culprits include throttle position sensors, electronic throttle bodies, and accelerator pedal position sensors. Have the vehicle professionally diagnosed, repair the root cause, clear all codes, and perform a throttle body relearn procedure.

Severity

High — Immediate AttentionWithin 24 Hours

Symptoms

•Check engine light on
•Significant loss of power — vehicle feels very sluggish
•Maximum speed limited to 25-45 mph depending on vehicle
•Engine may feel like it's fighting against itself when accelerating
•Transmission may not shift into higher gears

Likely Causes

Underlying throttle or engine fault triggering limited power mode40%

P2106 is a companion code indicating the PCM has limited engine power as a safety response. The root cause is another stored trouble code related to the throttle body, TPS, APP sensor, or another critical engine system.

Faulty throttle position sensor providing incorrect readings25%

When the TPS reports positions that conflict with PCM commands or show erratic behavior, the PCM limits engine power to maintain controllability while preventing potential unintended acceleration.

Failing electronic throttle body20%

An electronic throttle body with worn motors, sticky operation, or intermittent failures causes the PCM to detect unreliable throttle control and restrict engine output to a safe level.

APP sensor or wiring fault15%

Accelerator pedal position sensor issues — including intermittent signals, out-of-range voltages, or conflicting dual-sensor readings — can trigger the PCM to limit power until the driver input can be trusted.