Diagnostic Aids
WARNING: This page is about a different car, the 2002 Isuzu Rodeo Sport and 2002 Isuzu Rodeo. However, it is still accessible from the selected car via links, so may be relevant.
Check for following conditions:
- Damaged, missing or loose fuel filler cap.
- Missing or damaged 'O"-rings at EVAP canister fuel vapor and purge line fittings.
- A cracked EVAP canister
- Damaged or disconnected source vacuum line, EVAP purge line, vent hose or fuel tank vapor line.
- FVP sensor shares a 5-volt reference signal circuit with MAP sensor. If MAP sensor DTCs are also set with this DTC, check 5-volt reference circuit. See WIRING DIAGRAMS article.
- FVP sensor shares a ground circuit with ECT, TPS, CKP, CMP or A/T temperature sensors. If DTCs related to theses sensors are also set with this DTC, check FVP sensor ground circuit. See WIRING DIAGRAMS article.
- Poor, loose, backed out, improper mating, broken locks or damaged terminal connections in PCM harness connector.
- Damage to wiring harnesses or harness connectors. Check for open, short to ground or short to voltage in EVAP solenoid, EVAP purge solenoid and FVP sensor.
- Kinked, pinched or plugged vacuum hoses or lines. Verify that vacuum hoses and lines are not restricted.
- Check for charcoal particles in hoses and lines.