P0107
DTC P0106, P0107, or P0108
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (Diagnostic System Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Strategy Based Diagnosis) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Diagnostic Procedure Instructions)provides an overview of each diagnostic category.
DTC Descriptors
DTC P0106 00
- Manifold Absolute Pressure (MAP) Sensor Performance
DTC P0107 00
- Manifold Absolute Pressure (MAP) Sensor Circuit Low Voltage
DTC P0108 00
- Manifold Absolute Pressure (MAP) Sensor Circuit High Voltage
Diagnostic Fault Information
Typical Scan Tool Data
Circuit/System Description
The MAP sensor has a 5 V reference circuit, a low reference circuit, and a signal circuit. The engine control module (ECM) supplies 5 V to the MAP sensor on a 5 V reference circuit, and provides a ground on a low reference circuit. The MAP sensor provides a voltage signal to the ECM on a signal circuit relative to the intake manifold pressure changes.
Conditions for Running the DTC
P0106 00
* DTCs P0107 00, P0108 00, P0111 00, P0112 00, P0113 00, P0114 00, P0116 00, P0117 00, P0118 00, P0119 00, P0128 00, P0335 00, P0336 00 are not set
* The engine speed is between 400-6 500 RPM.
* The engine coolant temperature (ECT) sensor is between 70-125°C (158-257°F).
* The intake air temperature (IAT) sensor is between -20 to +125°C (-4 to +257°F).
* This DTC runs continuously when the above conditions are met.
P0107 00
* DTCs P0120 00, P0121 00, P0122 00, P0123 00, P0220 00, P0221 00, P0222 00, P0223 00 or P0641 00 are not set
* The engine speed is between 400-6 500 RPM.
* The throttle position is greater than or equal to 0% when the engine speed is less than or equal to 1 000 RPM
or
* The throttle position is greater than or equal to 12.5% when the engine speed is greater than 1 000 RPM.
* This DTC runs continuously when the above conditions are met.
P0108 00
* The engine has been running for a length of time that is determined by the start up coolant temperature. The length of time ranges from 5.5 min at colder than -30°C (-22°F) to 10 s at greater than 30°C (+86°F).
* DTCs P0120 00, P0121 00, P0122 00, P0123 00, P0220 00, P0221 00, P0222 00, P0223 00 or P0641 00 are not set
* The throttle position is less than or equal to 1% when the engine speed is less than or equal to 1 200 RPM.
or
* The throttle position is less than or equal to 20% when the engine speed is greater than 1 200 RPM.
* This DTC runs continuously when the above conditions are met.
Conditions for Setting the DTC
P0106 00
The ECM detects that the MAP sensor pressure is not within range of the calculated pressure that is derived from the system of models for more than 0.5 s.
P0107 00
The ECM detects that the MAP sensor voltage is less than 0.05 V for greater than 5 s.
P0108 00
The ECM detects that the MAP sensor voltage is more than 4.9 V for greater than 5 s.
Action Taken When the DTC Sets
DTCs P0106 00, P0107 00, and P0108 00 are Type B DTCs.
Conditions for Clearing the DTC
DTCs P0106 00, P0107 00, and P0108 00 are Type B DTCs.
Diagnostic Aids
Note: Verify that the engine is in good mechanical condition before continuing with this diagnostic.
* The charge air cooler is connected to the turbocharger and to the throttle body by flexible ductwork that requires the use of special high torque fastening clamps. These clamps cannot be substituted. In order to prevent any type of air leak when servicing the ductwork, the tightening specifications and proper positioning of the clamps is critical and must be strictly adhered to.
* Use a solution of dish soap and water in a spray bottle to pinpoint any suspected air leaks in the induction system. This includes vacuum lines, positive crankcase ventilation system, intake manifold, throttle body, charge air cooler assembly.
* A skewed or stuck ECT sensor or IAT sensor will cause the calculated models to be inaccurate and may cause this DTC to run. Refer to Temperature Versus Resistance (IAT) (Temperature Versus Resistance (IAT))Temperature Versus Resistance (ECT) (Temperature Versus Resistance (ECT)).
* A skewed MAP sensor will cause the BARO value to be inaccurate. Use the scan tool and compare the BARO parameter at ignition ON to the Altitude vs. Barometric Pressure Table. Refer to Altitude Versus Barometric Pressure (Altitude Versus Barometric Pressure).
* A skewed MAP sensor will also cause the first and second intake manifold models to disagree with the actual MAP sensor measurements. Use the scan tool and compare the MAP Sensor parameter to a known good vehicle, under various operating conditions.
* Inspect for the following conditions:
• Incorrect camshaft timing. Refer to Timing Belt Inspection (1.6L LDE, LXV, 1.8L 2H0, and LUW) (37. Timing Belt Inspection) for the correct timing.
• Worn piston rings. Refer to Engine Compression Test (Testing and Inspection).
Reference Information
Schematic Reference
Engine Controls Schematics ([1][2]Electrical Diagrams)
Connector End View Reference
Component Connector End Views (Connector End Views By Name)
Electrical Information Reference
* Circuit Testing (Circuit Testing)
* Connector Repairs (Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (Wiring Repairs)
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (Powertrain Diagnostic Trouble Code (DTC) Type Definitions)
Scan Tool Reference
Control Module References (Programming and Relearning)for scan tool information
Special Tools
EN 23738-A - Mityvac
For equivalent regional tools, refer to Special Tools (Tools and Equipment).
Circuit/System Verification
1. Ignition ON, observe the DTC information with a scan tool. Verify that DTC P0641 00, P0651 00, P0697 00, or P06A3 00 are not set.
• If any of the DTCs are set, refer to. Diagnostic Trouble Code (DTC) List - Vehicle (Diagnostic Trouble Code (DTC) List - Vehicle)
2. Verify none of the following conditions exist:
* Restricted exhaust, refer to Restricted Exhaust (Restricted Exhaust).
* Engine mechanical condition for example, low compression or incorrect timing belt installation. Refer to Symptoms - Engine Mechanical (Symptoms - Engine Mechanical).
* Verify there are no vacuum leaks.
* Verify the positive crankcase ventilation system if operation properly.
3. Determine the current vehicle testing altitude. Compare the MAP Sensor parameter to the reading in the Altitude Versus Barometric Pressure (Altitude Versus Barometric Pressure) table. The B74 Manifold Absolute Pressure Sensor pressure parameter should be within the specified range indicated in the table.
4. Ignition ON, engine OFF, observe the MAP Sensor parameter. Compare the parameters to the Altitude Versus Barometric Pressure (Altitude Versus Barometric Pressure) table. The parameters should be within the specified range indicated in the table.
5. Start the engine and observe the scan tool MAP Sensor parameter. The MAP sensor pressure parameter should change while starting the engine.
6. Operate the vehicle within the conditions for running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the freeze frame/failure records data.
Circuit/System Testing
Note: You must perform the Circuit/System Verification before proceeding with Circuit/System Testing.
1. Verify the integrity of the entire air induction system components by inspecting for the following conditions:
* Any damaged components
* Loose or improper air intake system installation including the flexible ductwork
* An air flow restriction
* Any vacuum leak
* Improperly routed vacuum hoses
* In cold climates, inspect for any snow or ice buildup at the BARO port on the ECM
* A restriction in the MAP sensor port or the BARO port
2. Ignition OFF, disconnect the harness connector at the B74 Manifold Absolute Pressure Sensor.
3. Ignition OFF for 1 m, test for less than 5 ohm between the low reference circuit terminal A and ground.
• If greater than the specified range, test the 5 V reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K20 Engine Control Module.
4. Ignition ON, test for 4.8-5.2 V between the B74 Manifold Absolute Pressure Sensor 5 V reference circuit terminal C and ground.
• If less than the specified range, test the 5 V reference circuit for a short to ground or open/high resistance. If the circuit tests normal, replace the K20 Engine Control Module.
• If greater than the specified range, test the 5 V reference circuit for a short to voltage. If the circuit tests normal, replace the K20 Engine Control Module.
5. Verify the scan tool MAP Sensor parameter is 1 kPa (0.14 PSI).
• If greater than the specified value, test the signal circuit terminal B for a short to voltage. If the circuit tests normal, replace the K20 Engine Control Module.
6. Install a 3 A fused jumper wire between the B74 Manifold Absolute Pressure Sensor signal circuit terminal B and the 5 V reference circuit terminal C. Verify the scan tool MAP sensor parameter is greater than 121 kPa (18 755 PSI).
• If less than the specified range, test the signal circuit for short to ground or an open/high resistance. If the circuit tests normal, replace the K20 Engine Control Module.
7. If all circuits test normal, test or replace the B74 Manifold Absolute Pressure Sensor.
Component Testing
Note: You must perform the Circuit/System Testing in order to verify the integrity of the MAP sensor circuits before proceeding with the Component Testing.
Skewed Sensor Test
1. Using the following steps and referencing the table below will determine if the MAP sensor is skewed.
2. Ignition ON, engine OFF, observe the MAP sensor scan tool parameter
3. Use the observed MAP Sensor Scan Tool parameter that is closest to a value that is indicated in the first column.
then
4. Using the EN 23738-A - Mityvac to apply 17 kPa (2.47 PSI) of vacuum to the MAP sensor, the parameter in the first column should decrease by 17 kPa (2.5 PSI). The acceptable range is indicated in the second column.
5. Using the EN 23738-A - Mityvac to apply 34 kPa (4.93 PSI) to the MAP sensor, the parameter in the first column should decrease by 34 kPa (5.0 PSI). The acceptable range is indicated in the third column.
Erratic Signal Test
1. Ignition OFF, remove the MAP sensor.
2. Install a 3 A fused jumper wire between the 5 V reference circuit terminal C and the corresponding terminal of the MAP sensor.
3. Install a jumper wire between the low reference circuit terminal A of the MAP sensor and ground.
4. Install a jumper wire at terminal B of the MAP sensor.
5. Connect a DMM between the jumper wire from terminal B of the MAP sensor and ground.
6. Ignition ON, with the EN 23738-A - Mityvac , slowly apply vacuum to the sensor while observing the voltage on the DMM. The voltage should vary between 0-5.2 V, without any spikes or dropouts.
• If the voltage reading is erratic, replace the B74 Manifold Absolute Pressure Sensor.
Repair Instructions
Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.
* Manifold Absolute Pressure Sensor Replacement (1.8L 2H0 and LUW) (Service and Repair)
* Control Module References (Programming and Relearning)for ECM replacement, setup, and programming.