AutoCodes – BMW – P0221 BMW

P0221 BMW Code - Throttle Valve Potentiometer 2 Plausibility To Air Mass

Quick Answer

Electric Throttle Control Actuator consists of throttle control motor, throttle position sensor (TPS), etc. Common causes include Throttle Position Sensor (TPS) harness is open or shorted, Throttle Position Sensor (TPS) circuit poor electrical connection, Faulty Throttle Position Sensor (TPS). Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P0221 BMW indicates Throttle Valve Potentiometer 2 Plausibility To Air Mass.
Common causes: Common causes include Throttle Position Sensor (TPS) harness is open or shorted, Throttle Position Sensor (TPS) circuit poor electrical connection, Faulty Throttle Position Sensor (TPS).
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 28,693

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0221 BMW Description

Electric Throttle Control Actuator consists of throttle control motor, throttle position sensor (TPS), etc. The throttle position sensor responds to the throttle valve movement.
The throttle position sensor has the two sensors. These sensors are a kind of potentiometers which transform the throttle valve position into output voltage, and emit the voltage signal to the Engine Control Module (ECM) In addition, these sensors detect the opening and closing speed of the throttle valve and feed the voltage signals to the ECM. The ECM judges the current opening angle of the throttle valve from these signals and the ECM controls the throttle control motor to make the throttle valve opening angle properly in response to driving condition.

OBDII Code P0221 BMW - Throttle Valve Potentiometer 2 Plausibility To Air Mass - AutoCodes.com — P0221 BMW Code - Throttle Valve Potentiometer 2 Plausibility To Air Mass

What does this mean?

What are the Possible Causes of the DTC P0221 BMW?

Throttle Position Sensor (TPS) harness is open or shorted
Throttle Position Sensor (TPS) circuit poor electrical connection
Faulty Throttle Position Sensor (TPS)
Fault Electric Throttle Control Actuator (or Throttle Body Motor)
Accelerator Pedal Position Sensor (APP)

How to Fix the DTC P0221 BMW?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0221 BMW code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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Need Help with the Code?

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0221 BMW Code

1. What does the OBDII code P0221 mean on a BMW?

P0221 indicates an issue with the throttle valve potentiometer 2, specifically a plausibility error in its correlation with the air mass readings.

2. What are the common symptoms of P0221 in a BMW?

Symptoms include reduced engine performance, hesitation during acceleration, rough idling, and the vehicle possibly entering limp mode.

3. What causes the P0221 code to appear on a BMW?

Common causes include a faulty throttle position sensor (TPS), damaged wiring or connectors, a malfunctioning throttle body, or issues with the air mass sensor.

4. Can a dirty throttle body cause the P0221 code?

Yes, a dirty or clogged throttle body can cause incorrect readings, potentially triggering the P0221 code.

5. How do you diagnose the P0221 code on a BMW?

Diagnosis involves checking the throttle position sensor, inspecting the throttle body and wiring for damage, and verifying the air mass sensorâ€™s functionality.

6. Can I drive my BMW with a P0221 code?

While the car might still be drivable, it may enter limp mode or experience reduced performance, so itâ€™s best to address the issue promptly to avoid further damage.

7. How do you fix the P0221 code on a BMW?

Repairs may include cleaning or replacing the throttle body, repairing damaged wiring or connectors, or replacing the throttle position sensor or air mass sensor.

8. Is a faulty mass air flow (MAF) sensor related to the P0221 code?

Yes, a malfunctioning MAF sensor can cause air mass readings to conflict with throttle position data, triggering the P0221 code.

9. How much does it cost to repair a P0221 code on a BMW?

Repair costs vary based on the issue, with throttle position sensor replacement typically costing $150â€“$400, while a throttle body replacement may cost $500â€“$1,000.

10. Can disconnecting the battery clear the P0221 code?

Disconnecting the battery may temporarily erase the code, but it wonâ€™t fix the underlying issue causing the P0221 error. Proper diagnosis and repair are necessary.