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

Our certified mechanics come to you · 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 $114.99 . Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.0 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 $114.99 $20.0
Toyota $114.99 $20.0
BMW $124.99 $20.0
SCHEDULE P2020 DIAGNOSTIC Get a fair and transparent estimate upfront

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.

Check Engine Light
trouble codes
P2020

No more waiting rooms! Our mechanics will come to you to diagnose and fix the P2020 code.

SCHEDULE P2020 DIAGNOSTIC
Get a $20 credit for the follow-up repair

Recent Check Engine Light is on Inspection reviews

Excellent Rating

(7400)

Rating Summary
6879
249
58
41
173
6879
249
58
41
173
 at YourMechanic

David

13 years of experience
393 reviews
David
13 years of experience
Chevrolet Malibu L4-2.4L - Check Engine Light is on Inspection - Marietta, Georgia
He explained everything to me in detail on what I needed to know about my car. Definitely recommend him for getting the job done.
 at YourMechanic

Raymond

37 years of experience
402 reviews
Raymond
37 years of experience
Toyota Camry L4-2.2L - Check Engine Light is on - Las Vegas, Nevada
Raymond did a great job however I was charged for two hours labor and he was only here less than 45 minutes. should I expect this on future appointments with your mechanic ?
 at YourMechanic

Shane

17 years of experience
217 reviews
Shane
17 years of experience
Volkswagen EuroVan V6-2.8L - Check Engine Light is on Inspection - Austin, Texas
Arrived on time. Explained the issues he found and how he will fix it. I have parts on order and will schedule an appointment to have Shane install the parts when they arrive.
 at YourMechanic

Kanstantsin

19 years of experience
51 reviews
Kanstantsin
19 years of experience
Ford F-150 V8-4.6L - Check Engine Light is on Inspection - Littleton, Colorado
Kanstantsin arrived early. Was very courteous and professional. Will highly recommend to anyone. Thank you Kanstantsin.


Related questions

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...
Audi getting codes P2015 and P2020 showing 2007 Audi A6 Quattro
Hi there - the P2015/P2020 (https://www.yourmechanic.com/article/p2015-obd-ii-trouble-code-intake-manifold-runner-position-sensor-switch-circuit-range-performance-bank-1-by-spencer-clayton) codes indicate a problem with the intake runner position sensor. This component keeps track of the intake runner flap position, as opposed to regulating whether it is open or closed. I recommend a Check...

More related articles

P2447 OBD-II Trouble Code: Secondary Air Injection System Pump Stuck off Bank 2
P2447 P2447 code definition Secondary Air Injection System Pump Stuck off Bank 2 What the P2447 code means P2447 is an OBD-II generic code for the engine control module (ECM) detecting the bank 2 secondary air injection pump stuck in...
P3465 OBD-11 Trouble Code: Cylinder 9 Deactivation/Intake Valve Control Circuit/Open
What What the P3465 code means This code indicates that there is a problem with the exhaust valve on cylinder number 9. When your vehicle’s powertrain control module (PCM) recognizes that the measured values of the mass airflow sensor, the...
P0483 OBD-II Trouble Code: Cooling Fan Rationality Check Malfunction
P0483 code means that the cooling fan has been commanded to turn on or off, but the voltage reading indicates that the fan did not respond.

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 (855) 347-2779 · hi@yourmechanic.com