An incorrect engine oil pressure gauge and an incorrect engine oil pressure sensor will provide false indications of low engine oil pressure or high engine oil pressure. Standard oil pressure sensors work by displaying a warning signal when the oil pressure falls outside of the set range. Two important components to the oil pressure sensor include the spring-loaded switch and a diaphragm. The spring-loaded switch is connected to the diaphragm that is exposed to the oil pressure. Pressure switch indicator can be diagnosed using DMM and inspect visually on the engine block. Good type of switch helps the ECU of Automobile engine to understand the oil pressure and actuate the moving parts or actuators accordingly.

Keywords: Oil pressure, Oil indicator, Dashboard warning light, Mechanical gauge.

[1] Jim Halderman, (2022). Automotive Technology: Principles, Diagnosis, and Service, 6th edition Published by Pearson (September 21st 2021).

[2] Roman Zinko, Oleh Polishchuk, (2021). Vehicle diagnostic system of the car engine MATEC Web of Conferences 351, 01014 20th International Conference Diagnostics of Machines and Vehicles.

[3] Martin W Stockel, Martin T Stockel, James E Duffy, Chris Johanson, (2021). Auto Fundamentals,  Goodheart-Wilcox Publisher; 13th Twelfth Edition, Revised Workbook Ed.

[4] A Self-Diagnostic Method for Automobile Faults in Multiple Working Conditions Based on SOM-BPNN Published online - 2021 Nov 3. DOI: 10.1155/2021/6801161.

[5] James Halderman, (2018). Automotive Engines : Theory and Servicing, Pearson Education (US), 19th ed ISBN: 13 9780134654003.

[6] Niu H. (2021). Fault diagnosis of automobile engine based on improved BP neural network. Modular Machine Tool and Automatic Processing Technology.

[7] William B. Ribbens and Normassssn P. Mansour, (2003). Understanding automotive electronics and electrical (6th ed.). Newnes. ISBN: 9780750675994.

[8] Hamrock, Bernard J. (2004). Fundamentals of fluid film lubrication. Steven R. Schmid, Bo O. Jacobson (2nd ed.). New York: Marcel Dekker. ISBN: 0-8247-5120-5. OCLC 55739786.

[9] Bela G. Liptak (Ed), (2003). Instrument Engineers' Handbook, Fourth Edition CRC Press, ISBN: 1420064029, Pages 790-793.

[10] Taskos Nikolaos, (2020). Pressure Sensing 101 – Absolute,  Gauge, Differential & Sealed pressure. ES Systems, Retrieved 2020-09-16.

[11] Stephen A. Dyer, (2004). Wiley Survey of Instrumentation and Measurement, John Wiley & Sons, ISBN: 0471221651.

[12] Safety requirements for electrical equipment for measurement, control and laboratory. General requirements. 1993. ISBN: 0-580-22433-3.

[13] Ribbens, W.B., Mansour, N.P. (2003). Understanding Automotive Electronics. USA, Massachusetts: Elsevier Science.

[14] Schwaller, A.E. (2005). Total Automotive Technology. USA, New York: Thomson and Delmar Learning.

[15] Hillier, V., Coombes, P. (2004). Fundamentals of Motor Vehicle Technology. UK, Cheltenham: Nelson Thornes Ltd.

[16] Knowles, D., Erjavec, J. (2005). Tech One: Basic Automotive Service and Maintenance. USA, New York: Thomson Delmar Learning.

[17] Inside a Car oil https://www.azosensors.com/article.aspx?ArticleID=44.

Source of Funding:

This research work did not receive any grant from funding agencies in the public or not-for-profit sectors.

Competing Interests Statement:

The authors declare no competing financial, professional, or personal interests.

Consent for publication:

The authors declare that they consented to the publication of this research work.

Authors’ Contributions:

All authors equally contributed to research and paper drafting.