Symptoms of P2189 OBD II Trouble Code
- Vehicle has a miss at an idle
- Hard to start, especially when hot
- Very irregular idle
- Additional codes to pinpoint cause of original P2189 code
- Whistling noises
- Lower turbo boost numbers
- Fuel smell
Common Causes of P2189 OBD II Trouble Code
- Faulty O2 sensor (front)
- Faulty gas cap seal
- Leaky or loose oil filler cap
- Air leaking into the intake manifold downstream from the Mass Airflow sensor due to the manifold itself, vacuum hoses off or cracked, leak MAP sensor, Leak at turbo bypass or it's stuck open, power brake booster hose, or a leak in the EVAP system hoses.
- Faulty MAP sensor
- EVAP canister purge valve
- Fuel injector leak
- Fuel pressure regulator faulty
- Leaks in the exhaust system
- Faulty variable camshaft timing
- Faulty ECM (engine management computer)
- Faulty O2 preheater (front)
- Clogged fuel filter
- Fuel pump wearing out and producing low pressure.
- Faulty mass air flow sensor