1, 2 and 3 Digit Codes: 160

EVAP Leak Monitor Small Leak Detected:

Trouble Code Number
- Scan tool A0 (160)
- General scan tool P0442
- MIL 31

Fault Message
- EVAP Leak Monitor Small Leak Detected

Background
- The PCM monitors that the fuel tank, purge lines, etc. are sealed well.
- When monitoring, the PCM pressurizes the purge lines by activating the evaporative emission ventilation solenoid with the canister ventilation valve (incorporated in the solenoid) closed.
- If the fuel tank and purge lines are sealed correctly, the pressure will rise well by activating the solenoid specific times
- After the pressure rises well, the diaphragm inside the solenoid will not work any more.
- If the purge air leaks slightly, the solenoid will be activated more than specific times.

Check Area
- All areas of evaporative system.

Judgement Criteria
- When a hole 1 - 2 mm in diameter is opened in the evaporative system. When a considerable amount of evaporating gas leak is detected.

Probable Cause
- Defective fuel tank filler tube assembly
- Defective hose between evaporative emission ventilation solenoid and intake manifold
- Defective evaporative emission ventilation solenoid