Volvo

The Engine Oil Pressure Sensor is used to detect engine lubrication system failures. The sensor consists of a pressure sensitive diaphragm and amplifier. Engine oil pressure causes the sensor’s diaphragm to deflect and produce an electrical signal proportional to the pressure. The diaphragm deflection signal is amplified in the sensor. The sensor’s signal is monitored by the Engine Control Module (ECM). The engine control module (ECM) will set a diagnostic trouble code (DTC) and derate the engine to avoid engine damage if the sensor signal is not within predetermined limits, or the signal is not rational.

Conditions for diagnostic trouble code (DTC):
1) Engine Oil Pressure Moderately Low

Observable symptoms
1) No symptoms reported

Probable cause
1) Low engine oil level (EOL)
2) Contaminated oil, slow flowing or too thin
3) Reduction valve
4) Worn oil pump
5) Engine oil pressure (EOP) sensor
6) Oil leakage

The Engine Oil Pressure Sensor is used to detect engine lubrication system failures. The sensor consists of a pressure sensitive diaphragm and amplifier. Engine oil pressure causes the sensor’s diaphragm to deflect and produce an electrical signal proportional to the pressure. The diaphragm deflection signal is amplified in the sensor. The sensor’s signal is monitored by the Engine Control Module (ECM). The engine control module (ECM) will set a diagnostic trouble code (DTC) and derate the engine to avoid engine damage if the sensor signal is not within predetermined limits, or the signal is not rational.

Conditions for diagnostic trouble code (DTC):
1) Sensor value differs from estimated value

Observable symptoms
1) Engine de-rated

Probable cause
1) Engine oil pressure (EOP) sensor
2) Engine wiring harness

The Engine Oil Pressure Sensor is used to detect engine lubrication system failures. The sensor consists of a pressure sensitive diaphragm and amplifier. Engine oil pressure causes the sensor’s diaphragm to deflect and produce an electrical signal proportional to the pressure. The diaphragm deflection signal is amplified in the sensor. The sensor’s signal is monitored by the Engine Control Module (ECM). The engine control module (ECM) will set a diagnostic trouble code (DTC) and derate the engine to avoid engine damage if the sensor signal is not within predetermined limits, or the signal is not rational.Conditions for diagnostic trouble code (DTC)

Diagnostic operating conditions
1) The voltage at pin EB:11 is more than 4.75?V

Observable symptoms
1) The engine oil pressure (EOP) gauge shows 0 when the engine is running

Probable cause
1) Connector
2) Wiring harness
3) Engine oil pressure (EOP) sensor
4) Engine control module (ECM)

The Engine Oil Pressure Sensor is used to detect engine lubrication system failures. The sensor consists of a pressure sensitive diaphragm and amplifier. Engine oil pressure causes the sensor’s diaphragm to deflect and produce an electrical signal proportional to the pressure. The diaphragm deflection signal is amplified in the sensor. The sensor’s signal is monitored by the Engine Control Module (ECM).
The engine control module (ECM) will set a diagnostic trouble code (DTC) and derate the engine to avoid engine damage if the sensor signal is not within predetermined limits, or the signal is not rational.

Conditions for diagnostic trouble code (DTC):
1) Engine Oil Pressure Sensor/Switch “A”, Circuit Open

Diagnostic operating conditions
1) The voltage at pin EB:11 is less than 0.3?V

Observable symptoms
1) The engine oil pressure (EOP) gauge shows 0 when the engine is running
2) Low Power

Probable cause
1) Short circuit to ground, Signal wire
2) Connector
3) Wiring harness
4) Engine oil pressure (EOP) sensor
5) Engine control module (ECM)

The Boost Air Pressure Sensor is used to monitor the pressure of the air in the intake system after the turbocharger. The sensor consists of a pressure sensitive diaphragm/amplifier sensor. Air pressure causes the sensors diaphragm to deflect and produce an electrical signal proportional to the pressure. The diaphragm deflection signal is amplified in the sensor.
The sensor signals are used to calculation fuel injection and is monitored by the Engine Control Module (ECM).
The engine control module (ECM) will set a diagnostic trouble code (DTC) and derate the engine to avoid engine damage if the sensor signal is not within predetermined limits, or the signal is not rational.

Conditions for diagnostic trouble code (DTC):
1) Abnormal value

Observable symptoms
1) Power loss

Probable cause
1) Intake manifold air temperature (IMAT) and pressure sensor
2) Wiring harness
3) Charge air system leakage

The Boost Air Pressure Sensor is used to monitor the pressure of the air in the intake system after the turbocharger. The sensor consists of a pressure sensitive diaphragm/amplifier sensor. Air pressure causes the sensors diaphragm to deflect and produce an electrical signal proportional to the pressure. The diaphragm deflection signal is amplified in the sensor.
The sensor signals are used to calculation fuel injection and is monitored by the Engine Control Module (ECM).
The engine control module (ECM) will set a diagnostic trouble code (DTC) and derate the engine to avoid engine damage if the sensor signal is not within predetermined limits, or the signal is not rational.

Conditions for diagnostic trouble code (DTC):
1) Abnormal value : Low

Observable symptoms
1) Engine de-rated
2) Black smoke

Probable cause
1) Wiring harness
2) Intake manifold air temperature (IMAT) and pressure sensor connector
3) Charge air system leakage

The Boost Air Pressure Sensor is used to monitor the pressure of the air in the intake system after the turbocharger. The sensor consists of a pressure sensitive diaphragm/amplifier sensor. Air pressure causes the sensors diaphragm to deflect and produce an electrical signal proportional to the pressure. The diaphragm deflection signal is amplified in the sensor.
The sensor signals are used to calculation fuel injection and is monitored by the Engine Control Module (ECM).
The engine control module (ECM) will set a diagnostic trouble code (DTC) and derate the engine to avoid engine damage if the sensor signal is not within predetermined limits, or the signal is not rational.

Conditions for diagnostic trouble code (DTC):
1) Charge pressure High

Observable symptoms
1) Engine de-rated

Probable cause
1) Intake manifold air temperature (IMAT) and pressure sensor
2) VGT actuator

The Boost Air Pressure Sensor is used to monitor the pressure of the air in the intake system after the turbocharger. The sensor consists of a pressure sensitive diaphragm/amplifier sensor. Air pressure causes the sensors diaphragm to deflect and produce an electrical signal proportional to the pressure. The diaphragm deflection signal is amplified in the sensor.
The sensor signals are used to calculation fuel injection and is monitored by the Engine Control Module (ECM).
The engine control module (ECM) will set a diagnostic trouble code (DTC) and derate the engine to avoid engine damage if the sensor signal is not within predetermined limits, or the signal is not rational.

Conditions for diagnostic trouble code (DTC):
1) Charge pressure High

Observable symptoms
1) Engine derate according to error torque map

Probable cause
1) Intake manifold air temperature (IMAT) and pressure sensor
2) Actuator
3) By-pass shutter