P2107 – Throttle Actuator Control Module Processor

What is OBD-II Code P2107?

P2107 is a diagnostic trouble code (DTC) for "Throttle Actuator Control Module Processor". This code indicates a problem with the throttle control module processor, causing the throttle actuator motor to fail to operate properly.

Urgency and Driving Considerations

In most cases, you can continue driving cautiously with a P2107 code. The severity of symptoms can vary:

• In rare cases, only the Check Engine Light may be present with no drivability issues
• The vehicle may run poorly, lack power, stall, or not start at all in more severe cases

It's best to diagnose and repair this issue promptly to prevent potential damage. If the car is hard to control or undrivable, have it towed to a repair shop.

Technical Details

The P2107 code is a generic powertrain code that applies to all makes and models of vehicles (1996-newer) equipped with OBD-II. The specific repair steps may vary slightly between vehicle makes.

Parts Involved

The main components related to code P2107 are:

1. Throttle Body Assembly – Controls the amount of air entering the engine. Houses the throttle plate, motor, and position sensors.

2. Throttle Actuator Control Module – The processor inside the throttle body that controls the throttle motor based on inputs from the accelerator pedal position sensor and PCM.

3. Accelerator Pedal Position Sensor (APP) – Measures accelerator pedal position and sends the signal to the PCM and throttle actuator control module.

4. Powertrain Control Module (PCM) – The main computer that monitors and controls engine functions, including the throttle system.

Common Causes

Potential causes that can trigger the P2107 code include:

1. Faulty throttle body assembly
2. Damaged wiring or poor electrical connections
3. Failed accelerator pedal position sensor
4. Malfunctioning powertrain control module (rare)

Diagnosis Steps

To properly diagnose a P2107 code, follow these steps:

1. Connect an OBD-II scanner and check for any other codes. Address those first if present.

2. Visually inspect the wiring and connectors between the APP sensor, throttle body, and PCM. Repair any damaged wiring.

3. Use a multimeter to test for proper voltage and continuity at the throttle body and APP sensor connectors. Compare to manufacturer specs.

4. Clean the throttle body and check for binding or sticking of the throttle plate. Replace if faulty.

5. Test the accelerator pedal position sensor and replace if it's out of range.

6. If all other components check out okay, the throttle actuator control module inside the throttle body has likely failed. Replace the throttle body assembly.

7. Clear the code and test drive to verify the repair.

Prevention and Cost

To prevent a P2107 code, keep the throttle body clean and ensure all wiring is in good condition. Regular throttle body cleaning every 50,000-100,000 km (30,000-60,000 miles) can help.

Repair costs for a P2107 code can vary depending on the root cause:

• Throttle body cleaning: $50-$100 / €45-€90
• Wiring repairs: $100-$300 / €90-€270
• Accelerator pedal sensor: $100-$300 / €90-€270
• Throttle body assembly: $300-$750 / €270-€680
• PCM replacement (rare): $500-$1500 / €450-€1350

Related Codes

Some other codes that may appear along with P2107 include:

• P0121-P0124 – Throttle position sensor faults
• P0221-P0228 – Accelerator pedal position sensor faults
• P2135 – Throttle/Pedal Position Sensor/Switch A / B Voltage Correlation

By understanding code P2107, its causes, and the diagnostic process, technicians can efficiently repair the throttle control system and get the vehicle running properly again. Always refer to the manufacturer's service information for specific diagnostic and repair procedures for your vehicle.

Frequently Asked Questions About P2107 Code

What does the P2107 code mean?

P2107 is a diagnostic trouble code (DTC) for "Throttle Actuator Control Module Processor". This code indicates a problem with the throttle control module processor, causing the throttle actuator motor to fail to operate properly.

How serious is the P2107 code?

The severity can vary. In rare cases, only the Check Engine Light may be on with no drivability issues. More commonly, the vehicle may run poorly, lack power, stall, or not start at all. It's best to diagnose and repair this promptly to prevent potential damage.

Can I still drive with a P2107 code?

In most cases, you can continue driving cautiously with a P2107 code. However, if the car is hard to control or undrivable, have it towed to a repair shop to avoid a safety risk.

What are the symptoms of a P2107 code?

Symptoms may include:

• Check Engine Light illuminated
• Decreased engine performance
• Engine may run poorly or stall
• Vehicle may not start
• Engine in "limp home" mode with reduced power

What causes a P2107 code?

Potential causes include:

• Faulty throttle body assembly
• Damaged wiring or poor electrical connections
• Failed accelerator pedal position sensor
• Malfunctioning powertrain control module (rare)

What parts are related to the P2107 code?

The main components involved are:

1. Throttle body assembly
2. Throttle actuator control module
3. Accelerator pedal position sensor
4. Powertrain control module

How do you diagnose a P2107 code?

Diagnosis steps include:

1. Scan for other codes and address those first
2. Visually inspect wiring and connectors
3. Test voltage and continuity at throttle body and APP sensor
4. Clean throttle body and check for sticking
5. Test accelerator pedal position sensor
6. If other components are okay, replace throttle body assembly
7. Clear code and test drive to verify fix

Can a bad throttle position sensor cause code P2107?

Yes, a failed throttle position sensor inside the throttle body can trigger the P2107 code. The throttle position sensor measures the throttle plate angle.

Can a dirty throttle body cause the P2107 code?

A dirty throttle body that causes the throttle plate to stick or bind can potentially trigger code P2107. Cleaning the throttle body is one of the diagnostic steps.

How much does it cost to fix code P2107?

Repair costs can vary widely depending on the root cause:

• Throttle body cleaning: $50-$100
• Wiring repairs: $100-$300
• Accelerator pedal sensor: $100-$300
• Throttle body assembly: $300-$750
• PCM replacement (rare): $500-$1500

Can you drive with a bad throttle body?

It is not recommended to drive with a confirmed faulty throttle body, as it can cause poor running, stalling, or "limp home" reduced power mode. In a worst case, it could leave you stranded.

How often should the throttle body be cleaned?

Periodic throttle body cleaning every 50,000-100,000 km (30,000-60,000 miles) can help prevent sticking throttle issues that may trigger a P2107 code.

What happens if you unplug the throttle position sensor?

Unplugging the throttle position sensor will likely trigger multiple throttle-related trouble codes, including P2107, and cause poor running or stalling. The engine relies on the TPS signal.

Can a weak car battery cause a P2107 code?

Unlikely. While a weak battery can cause issues with the throttle actuator motor, it would more likely trigger a low voltage code like P0562 before P2107 sets.

What does "throttle actuator control module processor" mean?

This refers to the processor inside the throttle body that receives signals from the accelerator pedal sensor and PCM and controls the throttle motor to open and close the throttle plate.

Is the P2107 code a manufacturer specific code?

No, P2107 is a generic powertrain code that applies to all makes and models of vehicles (1996-newer) equipped with OBD-II. The repair steps may vary slightly between vehicles.

Can a P2107 code clear itself?

Possibly. If the underlying problem was an intermittent electrical fault that corrected itself, the code may clear after a certain number of drive cycles with no fault present. However, it is best to properly diagnose and repair the issue.

Will disconnecting the battery clear a P2107 code?

Temporarily. Disconnecting the car battery will clear the code from memory, but it will likely return if the underlying problem has not been fixed. Proper diagnosis and repair is needed.

How do you perform a throttle body relearn after fixing a P2107 code?

On most vehicles, a throttle body relearn procedure must be done after cleaning or replacing the throttle body. The exact steps vary, but it usually involves:

1. Scanning for codes
2. Clearing codes
3. Starting engine and letting it idle
4. Turning ignition off for 10 seconds
5. Restarting engine and letting it idle
6. Revving engine a few times
7. Allowing engine to idle for 5 minutes to relearn

What other codes may appear with P2107?

Related codes that may appear along with P2107 include:

• P0121-P0124 – Throttle position sensor faults
• P0221-P0228 – Accelerator pedal position sensor faults
• P2135 – Throttle/Pedal Position Sensor/Switch A / B Voltage Correlation

The specific diagnostic steps and fixes can vary depending on the combination of codes present. Always consult the factory repair information for the vehicle when diagnosing multiple codes.