P2020 OBD-II Trouble Code: Intake Manifold Runner Pos Sensor/Switch Circuit Range/Performance Bank 2

Our certified mechanics come to you · 12-month, 12,000-mile warranty

SCHEDULE P2020 DIAGNOSTIC Get a fair and transparent estimate upfront
Red-stars EXCELLENT RATING ON

Cost of diagnosing the P2020 code

P2020 is a diagnostic trouble code (DTC) for "Intake Manifold Runner Pos Sensor/Switch Circuit Range/Performance Bank 2". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic for $70.00. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $30.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.

Cars Estimate Credit towards follow-up repair Earliest Availability
Ford$70.00$30.00
Toyota$70.00$30.00
BMW$70.00$30.00
SCHEDULE P2020 DIAGNOSTIC Get a fair and transparent estimate upfront

Check Engine Light

P2020 Code Definition

A P2020 code is a generic powertrain code related to the fuel and air metering and auxiliary emissions control systems. The Intake Manifold Runner Control (IMRC) controls are utilized to change or control airflow in the engine’s air intake system. If a P2020 code appears, it means the engine control module (ECM) has found a problem with the intake manifold runner control circuit in the engine’s bank 2 (or number 2 cylinder).

A P2020 code is related to:

  • P2014: Intake Manifold Runner Position Sensor/Switch Circuit Bank 1
  • P2015: Intake Manifold Runner Position Sensor / Switch Circuit Range / Performance Bank 1
  • P2016: Intake Manifold Runner Position Sensor/Switch Circuit Low Bank 1
  • P2017: Intake Manifold Runner Position Sensor/Switch Circuit High Bank 1
  • P2018: Intake Manifold Runner Position Sensor/Switch Circuit Interm Bank 1
  • P2019: Intake Manifold Runner Position Sensor/Switch Circuit Bank 2
  • P2021: Intake Manifold Runner Position Sensor/Switch Circuit Low Bank 2
  • P2022: Intake Manifold Runner Position Sensor/Switch Circuit High Bank 2
  • P2023: Intake Manifold Runner Position Sensor/Switch Circuit Interm Bank 2
  • P0172: System too Rich Bank 1
  • P2046: Reductant Temperature Sensor Circuit Intermittent

What the P2020 Code Means

The P2020 code appears when bank 2 (the engine bank with the number 2 cylinder) is receiving a voltage reading showing that the intake manifold runner flaps are out of position, or voltage or resistance readings from the solenoid are varying outside of allowed parameters.

A vehicle’s ECM utilizes several sensor readings to determine the position of the intake manifold runners to create air turbulence in the intake manifold. If the ECM does not detect the correct manifold air pressure variation, a P2020 code will be stored.

What Causes the P2020 Code?

The P2020 code can be caused by a number of potential problems, including:

  • Damaged or defective IMRC solenoid
  • Carbon deposits on the manifold runner flaps
  • Sticking or faulty throttle plates
  • Damaged or defective IMRC valves, actuators or sensors in bank 2
  • Damaged or defective ECM (rare)

What are the Symptoms of the P2020 Code?

The symptoms of a P2020 code may include:

  • Check Engine Light or warning light may be illuminated
  • Vibrations coming from the engine
  • Fluctuations in RPM at idle (or rough idle)
  • Hesitation at vehicle acceleration
  • Decreased fuel efficiency

How Does a Mechanic Diagnose the P2020 Code?

A mechanic will use a variety of methods to diagnose a P2020 code including:

  • Utilize an OBD-II scanner to check for a P2020 code stored in the ECM
  • Visually inspect all wires and connectors for damage
  • Visually inspect all hoses and vacuum lines for damage or leaks
  • Test the voltage signals between the IMRC solenoid and the ECM
  • Check and test that the IMRC valve moves
  • Remove the IMRC and check for any damage
  • Test the movement of the plates/valve for binding or looseness

Common Mistakes when Diagnosing the P2020 Code

One common mistake when diagnosing a P2020 code includes replacing the incorrect parts, such as a runner flap when the solenoid is the problem. Follow the proper procedures for correct diagnosis.

In addition, ensure you first diagnose any other intake/engine performance-related codes and check for any leaks before proceeding to diagnose a P2020, as a leak can cause the air/fuel ratio to present the incorrect possibility of a lean running engine.

How Serious is the P2020 Code?

Because mechanical failures in the IMRC can cause engine failure, this is considered a serious code. It is recommended to have your vehicle diagnosed and repaired immediately when this code appears.

What Repairs can Fix the P2020 Code?

  • Repair or replace any damaged, frayed, shorted, or burned wiring
  • Clean or replace any damaged connectors
  • Replace any damaged plates or valves
  • Replace a damaged or defective IMRC solenoid
  • Replace any damaged or defective IMRC sensors or actuators
  • Replace any damaged or defective runner flaps or components
  • Test all system circuits (continuity and resistance)
  • Replace or repair the IMRC
  • Clear the code, test drive the vehicle, and rescan to see if they reappear

Additional Comments for Consideration Regarding the P2020 Code

Some manufacturers have issued technical service bulletins (TSBs) regarding the P2020 fault code, so it is recommended to always check for any associated bulletins before making any repairs.

Need Help with a P2020 Code?

YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230.

P2020
trouble codes
Check Engine Light

Fast and easy Check Engine Light is on Inspection service at your home or office.

SCHEDULE P2020 DIAGNOSTIC
Get a fair and transparent estimate upfront

Recent Check Engine Light is on Inspection reviews

Excellent Rating


YourMechanic Check Engine Light is on Inspection Service

Average Rating

4.5/5

Number of Reviews

3,788

Rating Summary
3,460
163
43
24
98
3,460
163
43
24
98

Bret

39 years of experience
52 reviews
Bret
39 years of experience
very nice an knowledgeable. explained in detail what the problem was. now awaiting quote for work.
2000 HYUNDAI ACCENT - CHECK ENGINE LIGHT IS ON - MORAGA, CALIFORNIA

Kinder

18 years of experience
40 reviews
Kinder
18 years of experience
Very friendly seem to know a lot about cars
2003 HYUNDAI SONATA - CHECK ENGINE LIGHT IS ON - ATLANTA, GEORGIA

Travis

10 years of experience
105 reviews
Travis
10 years of experience
.
2008 JEEP COMMANDER - CHECK ENGINE LIGHT IS ON - MINNEAPOLIS, MINNESOTA

Chris

8 years of experience
223 reviews
Chris
8 years of experience
Extremely impressed with his courtesy and knowledge. I definitely would recommend him to all my friends. Great Job Chris and it was my pleasure meeting you. TOM
2008 JEEP GRAND CHEROKEE - CHECK ENGINE LIGHT IS ON - CAVE CREEK, ARIZONA

More related articles

How to Transfer a Car Title in Idaho
In order to prove ownership of a car, you must have the title. However, when a car is sold, given away or inherited, the title needs...
Veteran and Military Driver Laws and Benefits in Idaho
The state of Idaho offers a number of benefits and perks for those Americans who have either served in an Armed Forces branch in the...
P2159 OBD-II Trouble Code: Vehicle Speed Sensor B Range/Performance
Diagnostic Trouble Code (DTC): P2159 P2159 code definition Vehicle Speed Sensor B Range/Performance...

Related questions

Q: Fuel injector problems

Hello. Thanks for writing in. The diagnostic code that is triggering your warning light it's a fairly generic code relating to a bad reading at one of the sensors. This bad reading can mean that there's an electrical or mechanical...

Q: Check Engine Light is on, trouble codes P0001 and P0006 are showing.

The fuel shut off valve is a solenoid that is controlled primarily by the shut off relay. The message you are receiving is telling you the circuit has low voltage. This means the solenoid is not energizing the way it...

Q: Check engine light is on with error code P052B. Reset the ECM 3 times. Car is running fine. What could be wrong?

Hi there. The code is on for multiple different sensors that you would need to check. Check for a faulty Crankshaft position sensor, a faulty Camshaft position sensor, a faulty intake valve timing control solenoid valve, or a faulty intake...

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1-800-701-6230 · hi@yourmechanic.com