IR P185WIR & XP185WIR Troubleshooting: Engine Oil Pressure Lamp Stays Off
If the oil pressure warning lamp on your Ingersoll Rand P185WIR or XP185WIR doesn’t light up when it should—especially during startup checks—you’re missing a critical safeguard. The oil pressure lamp is your first line of defense against catastrophic engine damage. Here’s how to troubleshoot if it stays dark.
Common Causes of Oil Pressure Lamp Staying Off
- Bulb burned out: A dead lamp is the most common and easiest-to-fix cause. If it’s burned out, you’ll get no warning even if oil pressure drops dangerously low.
- Malfunctioning circuit board: A failure in the indicator control board could prevent the lamp from receiving the activation signal.
- Defective engine oil pressure switch: If the pressure switch doesn’t detect low oil pressure correctly, it may fail to trigger the lamp.
- Engine malfunctioning: In rare cases, internal engine issues affecting the oiling system could cause the system not to register correctly at all.
Recommended Fixes
- Inspect and replace the oil pressure lamp bulb if it's burned out.
- Test and replace the circuit board if other indicators are also malfunctioning.
- Inspect and replace a defective oil pressure switch to restore proper warning function.
- If everything else checks out, conduct a deeper inspection of the engine’s oiling system to rule out internal mechanical failures.
Wrap-Up
No oil pressure warning light? That’s a red flag in itself. Catching a malfunction early can protect your P185WIR or XP185WIR from major engine damage—and save you from a very expensive repair bill later.