P0106 OBD-II Trouble Code: Manifold Air Pressure (MAP) Barometric Pressure Sensor Electric Circuit Output Range and Performance Problem

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

SCHEDULE P0106 DIAGNOSTIC Get a fair and transparent estimate upfront
Red-stars EXCELLENT RATING ON

Cost of diagnosing the P0106 code

P0106 is a diagnostic trouble code (DTC) for "Manifold Air Pressure (MAP) Barometric Pressure Sensor Electric Circuit Output Range and Performance Problem". 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 $69.99. 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$69.99$20.00
Toyota$69.99$20.00
BMW$69.99$20.00
SCHEDULE P0106 DIAGNOSTIC Get a fair and transparent estimate upfront

P0106 Trouble code definition

Manifold Air Pressure (MAP) Barometric Pressure Sensor Electric Circuit Output Range and Performance Problem

What the P0106 code means

P0106 is the general code for a problem with the MAP circuit having problem of incorrect voltage output range or an issue with engine performance. The MAP sensor is an integral part of the fuel injection system and provides signals to the Engine Control Unit (ECU) for smooth operation and good fuel economy along with proper performance and power.

What causes the P0106 code?

The MAP circuit for range and performance problem may have several causes:

  • The source of the problem is that the MAP sensor range voltage output is incorrect and out of the programmed input required by the ECU.

  • The most common problem is an air intake system vacuum or intake hose being loose, cracked, or missing it’s plastic fittings and clamps.

  • The wiring or MAP sensor may be bad, brittle, cracked, have a bad connection, or could be too close to the higher voltage consumption components, especially alternators, ignition wires, etc. A poor electrical ground can cause problems also.

  • The sensor itself may simply be operating out of range from fatigue in it’s internal components.

  • MAP sensors must operate within specific ranges to send correct signals for the ECU to coordinate with the throttle position sensor and adjust correctly for proper engine operation.

  • If the engine is not in good condition, is missing, has poor fuel pressure, or there is an internal issue with the engine like a burned valve, it can prevent the MAP sensor from getting a correct output.

  • The ECU could also be bad but that is rare.

What are the symptoms of the P0106 code?

P0106 code will be generally preceded by the Check Engine Light coming on the dashboard display. The vehicle in most cases will not run well, idle poorly, accelerate erratically, run rich, and backfire because the MAP sensor and throttle position sensor will not operate together properly.

How does a mechanic diagnose the P0106 code?

P0106 is diagnosed with an OBD- II scanner. A qualified technician should then reset the OBD- II fault codes and perform a road test of the vehicle to see if the code comes back. He can observe this by watching live data streaming on his scanner while driving. If the code comes back, then the mechanic will need to do a close inspection to see if the vacuum line and other hoses on the intake system are missing, loose, damaged, or disconnected. If these things appear to be correct, the technician should do a voltage output test on the sensor while the engine is running to determine if the output voltages fluctuate with engine speed and load on the engine. Check that all grounds are operating correctly, since any ground related to the ECU could cause signal fluctuations from sensors.

Common mistakes when diagnosing the P0106 code.

Diagnostic errors are largely due to not following the proper procedure. First, follow the test procedure in the diagnosis to insure there is no intake air leak like a bad vacuum hose or connection. The technician must verify that the voltage output of the MAP sensor is correct and fluctuates with the engine speed and proper voltage. Idle voltage is normally 1 to 1.5 volts and full throttle is usually around 4.5 volts.

Do not buy a new MAP Sensor or ECU unless it is clearly at fault.

How serious is the P0106 code?

The P0106 code will result in poor running of the engine and requires immediate attention. Have the vehicle diagnosed as soon as possible. The MAP sensor issue can cause excessive fuel consumption, rough operation and difficulty starting in certain circumstances, and can cause other damage if continued to be driven. Occasionally, if no problems are found, the technician can reset the fault codes and retest it to see if the code or engine light comes back on.

Often times, if the engine warning light comes on immediately at startup, then the OBD- II system can be reset and the vehicle will operate normally.

What repairs can fix the P0106 code?

The most common potential repairs to address the P0106 code are as follows:

  • Verify the code with an OBD-II scanner. Reset the fault codes and perform a road test of the vehicle.

  • If the P0106 code comes back, then follow the test procedure.

  • Inspect the vacuum lines and intake hoses for cracked, loose or missing parts and electrical connector and wiring. Disconnect the electrical connector and then reinstall to insure a fresh and positive electrical connection. Then check the voltage output on the MAP sensor to see if it is in the correct range.

  • At this point it is best to determine if the MAP sensor is defective and if it has no or incorrect output, then replace the MAP sensor. If all checks are good, then a final test to determine if the ECU is bad must be done.

Additional comments for consideration regarding the P0106 code

Many vehicles with mileage over 100,000 have momentary sensor problems that usually occur during start up or prolonged stress situations on the drive train. If the engine warning light comes on and the vehicle seems to be operating normally, the OBD-II system can be reset using the scanner and the problem may not reoccur. This is why it is important to verify the fault and reset it before doing any repairs.

Need help with a P0106 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.

P0106
Check Engine Light
trouble codes

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

SCHEDULE P0106 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

4,240

Rating Summary
3,884
174
45
26
111
3,884
174
45
26
111
Vladimir

Vladimir

7 years of experience
214 reviews
Vladimir
7 years of experience
Vladimir explained everything clearly and was easy to work with. He was late for a few minutes but that was cool.
2003 TOYOTA AVALON - CHECK ENGINE LIGHT IS ON - ROSEVILLE, CALIFORNIA
Edmar

Edmar

19 years of experience
45 reviews
Edmar
19 years of experience
Showed up on time, easy to talk to, knows his cars. I would use him again.
2002 SUBARU OUTBACK - CHECK ENGINE LIGHT IS ON - LITTLE ELM, TEXAS
Joel

Joel

18 years of experience
562 reviews
Joel
18 years of experience
Thank you again for resolving the engine light icon! We definitely recommend!!!
2006 CHRYSLER 300 - CHECK ENGINE LIGHT IS ON - JACKSONVILLE, FLORIDA
Robert

Robert

29 years of experience
179 reviews
Robert
29 years of experience
Arrived early and was done fast. Great service.
1996 FORD F-150 - CHECK ENGINE LIGHT IS ON - BOULDER CREEK, CALIFORNIA

More related articles

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...
P2422 OBD-II Trouble Code: Evaporative Emissions Control System (EVAP) Vent Valve Stuck Closed
Diagnostic Trouble Code (DTC): P2422 P2422 code definition Evaporative Emissions Control System (EVAP)...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...

Related questions

Q: Why would I continue to have a P0106 code in my 2009 Ford Explorer

If you are continuing to get this code then you either got a bad sensor or you have an issue with a clog in the EGR lines. Both are common. Also, if the check engine light was not cleared after...

Q: Saturn vue 2005 check engine light most of the time P0172 errors.

P0172 means the fuel system is too rich; rich beyond the ability of the closed loop system to compensate. It might be a vacuum leak, a mass air flow sensor, or a fuel pressure regulator problem. At that age it...

Q: Why would I have a P0014 code in my 2008 Nissan 350Z

Hello. When you get this code it is because the computer is seeing that the valve timing is off. Most of the time this is a timing solenoid issue. It can also be caused by low engine oil, a sensor...

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