The Check Engine is light, and the scan show the codes P0456 and P0139. What will be the solution for these codes?
Thank!
Thank!
Mar 30, 2009 at 4:44 AM
2003 Volvo S40 Codes P0456 and P0139
HM
- MEMBER
- 3 POSTS
Advertisement
Hi HM,
Thank you for the donation.
P0456 EVAP Leak Monitor Small Leak Detected.
This usually is caused by a faulty gas cap or it has not been closed correctly.
Remove gas cap and check the seals for wear or improper seating. When closing gas cap, it must at least click 3 times when tightening it.
Some running might be required before the DTC clears up.
P0139 Oxygen Sensor Circuit Slow Response. This could be due to a faulty O2 sensor or its wiring circuit. Testings would be required to confirm if it is the unit or wiring circuits.
Thank you for the donation.
P0456 EVAP Leak Monitor Small Leak Detected.
This usually is caused by a faulty gas cap or it has not been closed correctly.
Remove gas cap and check the seals for wear or improper seating. When closing gas cap, it must at least click 3 times when tightening it.
Some running might be required before the DTC clears up.
P0139 Oxygen Sensor Circuit Slow Response. This could be due to a faulty O2 sensor or its wiring circuit. Testings would be required to confirm if it is the unit or wiring circuits.
Mar 30, 2009 at 5:38 AM
🔧 Tools & Auto Repair Parts
Find automotive tools, diagnostic equipment, and replacement
parts for your next repair.
Shop on Amazon →
Paid affiliate link. As an Amazon Associate, we earn from qualifying purchases.