Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Checking Oil Pressure Sensor

Tests 639 - 645:




Tests 646 - 650:





SYMPTOM
CHECKING OIL PRESSURE SENDING UNIT

POSSIBLE CAUSESLow oil level
- Oil pressure warning lamp bulb defective
- Oil pressure sensor signal circuit open
- Oil pressure sensor signal circuit shorted to ground
- Oil pressure sending unit defective
- PCM defective
- Cluster defective