P1253 ISUZU Possible Causes
- Low engine oil level
- Low engine oil pressure
- Blocked oil passage
- Faulty VCT oil control valve
How is P1253 ISUZU Code Repaired?
Start by checking the “Possible Causes” listed above. Visually inspect the wiring harness and associated connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.
Technical Notes
If P1253 is present, start by checking the engine oil level and condition. Change the engine oil and filter if necessary with the factory-recommended oil weight.
Possible Symptoms
- Engine light on (or service engine soon warning light)
P1253 ISUZU Meaning
The VTEC system, in conjunction with the Engine Control Module (ECM), activates the VTEC solenoid valve to control oil pressure to the VTEC mechanism which is installed in the valve system to switch valve timing between low and high. If the VTEC solenoid valve has an open circuit or short circuit, a DTC is recorded.