AutoCodes – Dodge – P2021 Dodge

P2021 Dodge Code - Intake Manifold Runner Position Sensor/Switch Circuit Low Bank 2

Quick Answer

The engine is equipped with an intake manifold flow control valve to promote maximum air/fuel atomization. Common causes include Faulty Intake Manifold Runner Position Sensor/Switch, Intake Manifold Runner Position Sensor/Switch harness is open or shorted, Intake Manifold Runner Position Sensor/Switch circuit poor electrical connection. 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: P2021 Dodge indicates Intake Manifold Runner Position Sensor/Switch Circuit Low Bank 2.
Common causes: Common causes include Faulty Intake Manifold Runner Position Sensor/Switch, Intake Manifold Runner Position Sensor/Switch harness is open or shorted, Intake Manifold Runner Position Sensor/Switch circuit poor electrical connection.
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 5,836

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on May 18, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2021 Dodge Description

The engine is equipped with an intake manifold flow control valve to promote maximum air/fuel atomization. The valve restricts air flow, causing it to tumble or swirl. The tumbling action helps ensure that the fuel and air mix thoroughly and burn faster. The intake manifold flow control valve and variable valve timing work together to improve fuel economy, idle stability, and emissions. The Engine Control Module (ECM) monitors the Intake Manifold Runner Position Sensor/Switch. The ECM sets the OBDII code when the Intake Manifold Runner Position Sensor/Switch is not to factory specifications.

OBDII Code P2021 Dodge - Intake Manifold Runner Position Sensor/Switch Circuit Low Bank 2 - AutoCodes.com — P2021 Dodge Code - Intake Manifold Runner Position Sensor/Switch Circuit Low Bank 2

What does this mean?

What are the Possible Causes of the DTC P2021 Dodge?

Faulty Intake Manifold Runner Position Sensor/Switch
Intake Manifold Runner Position Sensor/Switch harness is open or shorted
Intake Manifold Runner Position Sensor/Switch circuit poor electrical connection
Mechanical concern
bind, seize, damage, or obstruction of IMRC hardware

How to Fix the DTC P2021 Dodge?

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 P2021 Dodge 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 P2021 Dodge Code

1. What does the OBDII code P2021 mean on a Dodge vehicle?

P2021 indicates an issue with the Intake Manifold Runner Position Sensor/Switch Circuit Low on Bank 2, meaning the sensor is detecting values lower than expected.

2. What are common symptoms of the P2021 code?

Symptoms include reduced engine performance, poor fuel economy, rough idling, and the Check Engine Light turning on.

3. What causes the P2021 code on a Dodge?

Common causes include a faulty intake manifold runner position sensor, damaged wiring or connectors, carbon buildup in the intake manifold, or a malfunctioning intake manifold runner control valve.

4. Can I drive my Dodge with a P2021 code?

While the vehicle may still be drivable, ignoring the code can lead to reduced performance and potential engine damage if left unaddressed.

5. How do I diagnose the P2021 code?

Diagnosis involves scanning for stored codes, inspecting the intake manifold runner position sensor and wiring, and checking for carbon buildup or mechanical issues with the intake manifold components.

6. How can I fix the P2021 code?

Repairs may include replacing the intake manifold runner position sensor, cleaning or replacing the intake manifold, repairing damaged wiring, or replacing the runner control valve.

7. What tools are needed to fix a P2021 code?

You may need an OBDII scanner, a multimeter to test the sensor and wiring, and basic tools for removing and inspecting intake manifold components.

8. Is the P2021 code specific to Dodge vehicles?

No, the P2021 code can appear on other makes and models, but the exact diagnosis and repair steps may vary.

9. How much does it cost to repair the P2021 code?

Repair costs can range from $100 to $500 or more, depending on whether parts like the sensor or intake manifold need to be replaced.

10. Can a dirty air filter cause the P2021 code?

A dirty air filter is unlikely to directly cause the P2021 code, but it can contribute to airflow issues that might exacerbate intake manifold problems.