P1106 - FAULT CODE - OBD2

P1106 ACURA, HONDA: BAROMETRIC PRESSURE SENSOR RANGE/PERFORMANCE PROBLEM

P1106 BUICK, CADILLAC, CHEVROLET, FORD, GMC, LINCOLN, MERCURY: MANIFOLD ABSOLUTE PRESSURE SENSOR INTERMITTENT HIGH VOLTAGE CIRCUIT

P1106 CHRYSLER, DODGE: BARO SOLENOID PERFORMANCE

P1106 HYUNDAI: ABSOLUTE PRESSURE SENSOR MANIFOLD SHORT CIRCUIT HIGH INTERMITTENT INPUT

The Barometric Pressure Sensor (BARO) is intended to provide the ECM (Engine Control Module) with information related to the atmospheric pressure, which changes or decreases as the vehicle is driven through altitude gain. The BARO Sensor works in conjunction with the MAP Sensor (Manifold Absolute Pressure Sensor), and with all this input data the ECM manages to calculate strategies, with which higher fuel efficiency and better ignition timing are achieved. In this way, regardless of the elevation of the applications above sea level, the engine can operate at maximum efficiency.

The ECM estimates the most appropriate intake air flow by taking into account the reading provided by the MAP Sensor and BARO Sensor. If the ECM detects that the output voltage of the Barometric Pressure Sensor does not match the specified voltage, it is considered a malfunction of this sensor and the diagnostic code P1106 OBDII will be set. This being a manufacturer’s specific code may vary, so it is necessary to see how it applies to your vehicle.

• Check Engine light comes on.
• Unstable engine operation.
• Lower fuel efficiency.
• Large amounts of black smoke are expelled from the exhaust.

The reasons for the P1106 OBD2 fault code being stored are:

• The wiring or connectors related to the sensors for this code may have been damaged.
• The MAP Sensor may have been damaged.
• The Barometric Pressure Sensor could be bad.
• The ECM could have a programming error.

The steps to follow to correct the DTC P1106 OBDII code are as follows:

• As a first step, we invite you to consult the Technical Service Bulletins. These contain very useful information.
• Verify the good condition of the cables, connectors, and other electrical components related to the MAP Sensor and the BARO Sensor. Repair or replace any of these as required.
• Refer to the manufacturer's diagnostic steps for the MAP Sensor and BARO Sensor. If you discover damage to these, make the appropriate corrections.
• In certain cases, the P1106 code is set when the ECM fails to read the Barometric Pressure Sensor Therefore, before making any component changes, clear the code and then start the engine at 3000 RPM with no load and let it idle. Check if the code returns and if this is the case, it may be due to an error in the ECM.