Morning, i changed my main o2 sensor on my 07 accord ex 2.4L after i scanned and got this p0107 code. i even had to change the manifold as it was cracked and i got an oil change but the engine light is still on and it's been a month since i changed all that. it got rescanned and the light was cleared but came back on next day and the car is now burning gas and i only put premium gas in the tank. i need help please.

P0101 is the MAF (mass air flow) sensor that measure the amount of air entering the engine. Not enough air means rich running and a possible cause of fuel smell. Apart from running a little rougher there aren't always many signs that something is wrong.
P0107 is the MAP (manifold absolute pressure) sensor and responds to changes in manifold inlet pressure (vacuum). Problems cause include hard to start, long cranking times, sputtering/missing, blowing black smoke, poor fuel economy.

code p0107 refers to manifold absolute pressure (MAP) sensor/barometric pressure (BARO) sensor--low input===causes wiring short to ground.---MAP sensor---Baro sensor----ECM
Maybe you didn't change the right sensor.

Use your computer Google or whatever & type:

OBD PO107

Just learn how OBD2 Systems work, because codes
have nothing to do with installing parts

You have to know how the vehicles systems & components
work & how to test them

You only replace parts when you find a problem & a part fails
a test or data is not correct

You need knowledge & professional scan tool to even work
on any vehicle since 1981

What year vehicle ? mass air flow or speed density fuel control . Do you have a scan tool that can view sensor data . What are the fuel trims ( short & long term ) showing ? PCM problem ? O2 sensors stuck lean , adding propane , do the O2 sensors go rich ?

P0107 Manifold Absolute Pressure/Barometric Pressure Circuit Low Input

P0130 02 Sensor Circuit Malfunction (Bank I Sensor 1)

P0135 02 Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)

P0171 System too Lean (Bank 1)

Check your Manifold Absolute Pressure Sensor, and it might be a good time to install a new Upstream O2 Sensor.

It might also be beneficial to have your fuel pressure checked if the engine is really running Lean, but this may be caused by a faulty O2 sensor.


I’m happy to help further over the phone at https://www.6ya.com/expert/jeremy_69f3cc28d95bf514

The Manifold Absolute Pressure (MAP) sensor responds to changes in the intake manifold pressure (vacuum). 5 Volts is supplied to the sensor from the PCM (powertrain control module). Inside the MAP sensor is a resistor that moves in relation to manifold pressure. The resistor varies the voltage between about 1 volt to 4.5 volts (depending on engine load) and that voltage signal is returned to the PCM to indicate manifold pressure (vacuum). This signal is essential for the PCM to determine fuel delivery. A P0107 DTC is set when the PCM sees that the MAP signal voltage is less than .25 volts which is too low.

Potential Symptoms Anytime the MAP sensor signal is low the vehicle will likely have a very difficult time starting. Other symptoms may include:

• Hard to start
• Long cranking times
• Sputtering/missing
• Blowing black smoke
• Poor fuel economy
• Dies intermittently
• MIL(Malfunction Indicator Lamp) illumination

Causes The causes of a low MAP sensor signal circuit (P0107) could be any of the following:

• Bad MAP sensor
• Open or short in the signal circuit
• Open or short in the 5 Volt reference circuit
• Ground circuit open or shorted
• Bad PCM

Possible Solutions First, using a scan tool with the Key on and engine running, monitor the MAP sensor voltage. If it is reading less than .5 volts, turn engine off, unplug the MAP sensor and, using a DVOM (Digital Volt/Ohm Meter) check for 5Volts on the 5 Volt reference circuit.
1. If there is not 5 Volts on the reference circuit, then check for the reference voltage at the PCM connector. If it is present at the PCM connector but not the MAP connector, repair the open in the reference circuit between the PCM and MAP harness connector. If 5 Volt reference is NOT present at the PCM connector, check powers and grounds of PCM and repair/replace as needed. (NOTE: On Chrysler products, a shorted Crank sensor, Vehicle speed sensor or any other sensor that utilizes the 5 Volt reference from the PCM can short out the 5 Volt reference. To fix simply unplug each sensor one at a time until the 5 Volt reference reappears. The last sensor unplugged is the shorted sensor.)
2. If you have a 5 Volt reference at the MAP connector, jumper the 5 volt reference circuit to the signal circuit. Now check the MAP voltage on the scan tool. It should be 4.5 to 5 Volts. If it is, replace MAP sensor. If not, repair open/short in the signal circuit wiring and re-check.
3. If all appears okay, perform a wiggle test. Start engine and manipulate the harness, connector and tap on the MAP sensor. Note any changes in voltage or engine speed. Repair connector, harness, or sensor as needed.
4. If the wiggle test checks out, use a vacuum pump
(or just use your lungs) to draw a vacuum on the MAP sensor vacuum port. As you add vacuum the voltage should decrease. With no vacuum, the MAP sensor should read approximately 4.5 volts. If there is no change in MAP sensor reading on the scan tool, replace MAP sensor.

check the o2 sensor on exhaust at front of engine you might have damaged wires.

This sounds like an O2 sensor, there are 4 O2 sensors, 2 for each bank, 2 up stream by the exhaust manifold and 2 down stream by the catalytic converter. However the information you have given is limited, the explanation for the code seems to be missing some information. Ex: right bank sensor 1 to lean.

The o2 sensors because the car may have more than one, are located before the catalic converter, they look like spark plugs with 3 or more cables running from the top, scan the car to check for other codes.

On Honda Accord the O2 sensor is located either on the exhaust manifold near to the front or side of the manifold, or in the manifold rear side, depending if it is a four or six cylinders model.

To give an idea of the job, check this website showing the procedure on a different car:

How to Replace an Oxygen Sensor -

To find step by step for your car, I suggest buying the Haynes manual.

To order the part you can use the website below, or buy it at a local car parts shop.

Honda Oxygen Sensor - Oxygen Sensors - Partstrain.com