What is the P0107 fault number? Manifold Absolute Pressure (MAP) Sensor / Barometric Pressure Sensor Circuit Low Input malfunction description? How do I fix the P0107 fault code What are the symptoms and causes for the P0107 fault code
What is the P0107 fault code? What does it all mean?
A MAP sensor (Manifold Absolute pressure) is installed in your car. It measures the pressure inside the intake manifold. This pressure can change depending on engine speed, throttle open, temperature, and barometric (BARO) pressure.
The MAP signal is used by the Powertrain Control Module (PCM/ECM) to make adjustments that are specific to the vehicle’s design. EGR control, fuel delivery calculations, and diagnostics for other sensors are some examples.
A resistor is located inside the MAP sensor and it reacts to manifold pressure. The voltage signal of the resistor varies depending on the motor load. It can range from approximately 1 volt up to 4.5 volts. This signal allows the PCM to detect the manifold pressure, and to determine fuel delivery. If the voltage signal received from the MAP sensor circuit by the PCM is below 0.25 volts, a malfunction code P0107 has been set.
What is the P0107 Fault Code?
There are several reasons that the MAP sensor might send a low voltage signal (to the PCM):
- – Defective MAP sensor
- – Circuit problems like loose connections or damaged wiring
- – Weak electrical signal
- – Low engine vacuum
- – Defective PCM / ECM / ECU
The MAP sensor may not produce the correct voltage signal if the engine is in poor condition, low fuel pressure or has other problems such as a melted vale. However, it is very rare for the ECU, ECM or PCM to be defective.
What are the symptoms of P0107 Malfunction Code?
- – Continuous flashing or intermittent flashing at the check engine light
- Difficulty starting the engine
- – Unusual operation of the engine
- – An increase in fuel consumption
- Engine stalling
- – Engine speed fluctuations
- – Uncontrolled accelerations, kickbacks
- – The exhaust emits black smoke
How do I fix the P0107 fault code?
- Road testing is recommended to determine if codes will return.
- If the code is returned, it is important to inspect the MAP sensor wiring. It is necessary to repair broken, corroded cables or loose connections. It is necessary to disconnect the connector and reconnect it.
- – A multimeter should be used to test the MAP sensor. The input voltage for the MAP sensor should not exceed 5 volts. With the throttle open, the minimum voltage output should not exceed 0.5 volts. The maximum voltage output at full throttle is typically around 4.5 volts. The voltage signal should change with engine speed.
- – The MAP sensor should not be used if the voltage signal is not consistent with expectations.
- – The PCM should only be used if all other controls are satisfactory.
How serious is the P0107 Fault code?
Fault code P0107 is a condition that causes an engine to run erratically. It requires immediate intervention. It is important to diagnose the problem as soon as you can. If the problem is not addressed immediately, it can lead to excessive fuel consumption, erratic running and difficulty starting the engine under certain conditions. It may also cause engine damage if the vehicle continues to be driven.
