P2077 OBD-II Trouble Code: Intake Manifold Tuning (IMT) Valve Position Sensor/Switch Circuit Low

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

SCHEDULE P2077 DIAGNOSTIC Get a fair and transparent estimate upfront
Red-stars EXCELLENT RATING ON

Cost of diagnosing the P2077 code

P2077 is a diagnostic trouble code (DTC) for "Intake Manifold Tuning (IMT) Valve Position Sensor/Switch Circuit Low". 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 $79.99. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.00 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$79.99$20.00
Toyota$79.99$20.00
BMW$79.99$20.00
SCHEDULE P2077 DIAGNOSTIC Get a fair and transparent estimate upfront

Check Engine Light

P2077 code definition

Intake Manifold Tuning (IMT) Valve Position Sensor/Switch Circuit Low

What the P2077 code means

P2077 is an OBD-II generic code for the Engine Control Module (ECM), detecting the intake manifold tuning valve position sensor circuit Pulse Width Modulation (PWM) below specifications or expected values.

What causes the P2077 code?

  • The ECM monitors the return voltage PWM from the IMT sensor circuit and will turn on the Check Engine Light and set code P2077 when the PWM voltage return is below the specified voltage for the position commanded.

  • A short to ground on the 5 volt reference supply to the IMT sensor

  • An open wire on the power supply circuit

  • An open or short on the return signal wire to the ECM

  • High resistance in the signal return wire circuit

  • Corrosion in the connections

What are the symptoms of the P2077 code?

  • The Check Engine Light will be illuminated and the code is set in ECM memory as a fault.

  • The engine may have low power on acceleration, if the IMT is closed when it failed.

  • The engine may have low power at higher speeds, if the IMT failed in the open position.

  • The engine may hesitate on acceleration, depending on what position the IMT failed.

How does a mechanic diagnose the P2077 code?

  • Scan codes and document the codes in the ECM and look at the freeze frame data for failure.

  • Look at the data for the IMT to see if it changes position on acceleration and cruise speeds.

  • Measure the resistance of the IMT sensor and check to specifications.

  • Diagnose code P2077 following the manufacturer pinpoint tests.

  • Check the wiring and connector to the supply circuit for shorts, breaks or loose connections to the IMT sensor.

  • Verify the IMT actuator mechanism is not binding in the intake manifold.

Common mistakes when diagnosing the P2077 code?

  • Clearing the ECM memory codes before checking the freeze frame data for the main failure problem, so the failure may be duplicated and repaired.

  • Failing to clear the ECM codes after the codes are fixed.

  • Failing to use the special connector probe tool when testing the connectors and causing female connector damage.

How serious is the P2077 code?

Code P2077 is for the intake manifold runner control and the runner changes to increase power at low RPMs and changes again to give better highway mileage. Problems with this system will cause the engine to have low power and lower fuel mileage on the highway.

What repairs can fix the P2077 code?

Additional comments for consideration regarding the P2077 code

Code P2077 is for vehicles that have an intake manifold runner to shorten or lengthen the runners by operating a set of valves built into the intake manifold. The runner is operated by electrical or vacuum style actuators and have sensors built into them. The sensors could have separate parts depending on manufacturer. Follow pinpoint tests for this reason.

Need help with a P2077 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.

P2077
trouble codes
Check Engine Light

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

SCHEDULE P2077 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

4.8/5

Number of Reviews

4,255

Rating Summary
3,898
174
45
26
112
3,898
174
45
26
112
Ben

Ben

39 years of experience
1020 reviews
Ben
39 years of experience
Lexus LS430 - Check Engine Light is on - Houston, Texas
I was very pleased with the courtesy and work of Mr. Smith. He was exceptional in explaining and correcting the problem and thereby gained my trustI . I request he be my mechanic in all future service requests. I had a great experience working with Mr. Ben Smith.
Richard

Richard

19 years of experience
203 reviews
Richard
19 years of experience
Ram ProMaster 1500 - Check Engine Light is on - Bonita Springs, Florida
Prompt, polite and personal. Took the time to explain the process and his recommendations. 2 thumbs up
Michael

Michael

23 years of experience
37 reviews
Michael
23 years of experience
Ford F-150 - Check Engine Light is on - Federal Way, Washington
Very helpful and explained everything and what needs to be addressed. I feel informed and confident in Mike’s assessment and look forward to him performing services on my vehicle.
Rigoberto

Rigoberto

9 years of experience
650 reviews
Rigoberto
9 years of experience
Honda Civic - Check Engine Light is on - Chicago, Illinois
Rigoberto came on time & quickly diagnosed the problem- rats chewed thru wiring near the battery. He wasn’t able to fix it himself bc of parts, but gave me recommendations on where to go & how to not have the dealership sell me services that are not needed.

More related articles

Insurance Requirements for Car Registration in Kentucky
The Kentucky Transportation Cabinet requires that all drivers in Kentucky carry liability automotive insurance, or “financial responsibility” in order to operate a vehicle legally and maintain vehicle...
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...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...

Related questions

Q: The airbag light is on, could it be caused by previous work done on the car?

The SRS (Airbag) light comes on when the controller has sensed a malfunction somewhere in the system. The malfunction may be an open circuit or an incorrect voltage at any of the sensors. When the controller sees the error, it...

Q: 05 Acura tl 6 spd will not accelerate

First see if engine will rev up out of gear to see f problem is engine throttle or you have a slipping transmission clutch. If engine runs good and revs normally then have the transmission clutch checked for needing replacement....

Q: I believe one of my ignition coils is bad, how can I test to see which one is bad?

The only way to determine exactly which ignition coil is damaged is to have a professional mechanic complete a diagnostic scan and download all error codes. The OBD-II error codes will pinpoint the source of engine issues. Having a mechanic...

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