Oil Pressure Sensors

The Oil Pressure Sensor, sometimes referred to as an Oil Pressure Switch, is responsible for monitoring the engine’s oil pressure and sending this information to the vehicle’s computer — also known as the ECM (Engine Control Module), ECU (Engine Control Unit), or PCM (Powertrain Control Module).

If the system detects oil pressure outside normal operating range, it triggers the oil pressure warning light on the dashboard. In many cases, a faulty or failing oil pressure sensor may be the cause of this warning, rather than an actual oil system problem.

How It Works:

• The sensor measures engine oil pressure using an internal pressure-sensitive diaphragm.
• As pressure changes, the diaphragm moves and alters the sensor’s electrical signal to the ECM/PCM.
• The computer uses this data to display pressure readings or activate warning indicators.
• If pressure drops below safe limits, the oil warning light will illuminate, helping prevent severe engine damage.

Product Features & Benefits from Walker Products:

• Exact OE Fit: Direct replacement ensures proper communication with the vehicle’s ECM/PCM.
• OE Replacement Quality: Engineered to meet or exceed OE performance specifications.
• Durable Construction: Built to resist heat, vibration, and oil contamination for long service life.
• Restores System Accuracy: Provides reliable pressure readings to protect the engine from damage.
• Aftermarket Expertise: Backed by over 75 years of experience in producing trusted engine management components.

Symptoms of a Failing Oil Pressure Sensor:

• Inaccurate oil readings, such as the low oil light illuminating even when levels are normal.
• Oil pressure light flashing or staying on continuously.
• Oil pressure gauge reading zero or fluctuating erratically.
• False low-pressure warnings leading to confusion during diagnosis.