April 10, 2026

⚠️ Need your PCM repaired? 👉 Start your repair here

What does code P2117 mean?

A P2117 trouble code indicates that the throttle or accelerator pedal position sensor “B” is not operating within its expected range at maximum (fully open) position.

In simple terms, the PCM is not seeing the correct signal when the throttle should be fully open, which can affect acceleration and engine performance.

👉 Need help understanding PCM failures? Start here: What Does an ECM Do in a Car?

Common symptoms of a P2117 code

• Reduced engine power
• Poor acceleration
• Limited throttle response
• Vehicle may enter limp mode
• Check engine light on
• Hesitation during acceleration
• Engine may not reach higher RPMs

What can cause a P2117 code?

• Faulty throttle position sensor (Sensor B)
• Accelerator pedal position sensor issues
• Dirty or sticking throttle body
• Carbon buildup restricting movement
• Wiring or connector problems
• Sensor calibration issues
• PCM-related performance faults

This code is typically related to sensor range and throttle response issues at higher input levels.

Is P2117 serious?

It can be. While the vehicle may still run, it may not deliver full power or proper acceleration, which can affect drivability and safety.

How is P2117 diagnosed?

• Scan for additional trouble codes
• Inspect throttle body for buildup
• Check throttle plate movement
• Test throttle and pedal position sensors
• Inspect wiring and connectors
• Verify PCM inputs and outputs

Accurate testing is important since this involves maximum range sensor performance.

How do you fix a P2117 code?

• Clean the throttle body
• Repair or replace faulty sensors
• Fix wiring or connector issues
• Perform throttle relearn procedures
• Address airflow-related problems
• Test and repair PCM-related issues if necessary

Many cases are resolved with cleaning and recalibration.

Can a bad PCM cause a P2117 code?

Yes, although less common. The PCM monitors sensor signals and compares expected values. If it cannot properly process or interpret the data, it may trigger a P2117 code.

💰 PCM Repair vs Replacement

• Dealership Replacement: $1,000 – $2,500+
• Repair & Return Service: Faster and more affordable ✅
• Plug-and-Play Options Available

At AutoPCMS, we specialize in repairing and programming PCM modules to restore throttle control and overall performance without the high dealership cost.

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👉 Read more PCM symptoms and warning signs

🧠 Final Thoughts

The P2117 code indicates a problem with sensor “B” at its maximum throttle position, which can limit acceleration and overall engine performance. While it may seem minor, it can lead to noticeable drivability issues.

👉 Fixing the issue early helps restore full power and ensures smooth, reliable operation.

👉 Still dealing with a P2117 code? Start your repair here

🔗 Related Trouble Codes You Should Check

If you're diagnosing a P2112 code, you may also want to check:

👉 P2101 Code  
👉 P2116 Code  
👉 P0607 Code