P0402Średni
Układ EGR — nadmierny przepływ
Układ napędowy
Sprawdź szczegóły →P3350
ŚredniExhaust Gas Recirculation Sensor B – Circuit High Voltage. The code indicates an incorrect signal from the EGR B sensor, exceeding the permissible voltage range.
OBD-II (EN): EGR B Sensor Circuit High
Code P3350 means too high voltage in the exhaust gas recirculation sensor B circuit (EGR Sensor B Circuit High) – the engine management system detected a signal outside the permissible range. The cause may be a damaged sensor, open wiring, or a contaminated EGR valve. We recommend professional diagnosis to precisely locate the fault and avoid damage to the catalytic converter or engine.
Symptoms
- MIL (engine) warning light on the dashboard - Increased fuel consumption - Jerking or rough engine idle - Decrease in engine power and responsiveness - Possible difficulty starting the engine - Increased exhaust emissions (NOx) - Engine may enter limp mode
Possible causes
- Damaged or contaminated EGR B sensor (soot deposit blocking the measuring element) - Open or short circuit in the EGR B sensor circuit wiring harness - Damaged sensor electrical connector (corrosion, loose contacts) - Faulty EGR valve causing incorrect sensor readings - Damaged ECM/PCM module (rarely) interpreting the out-of-range signal
Affected systems
Układ recyrkulacji spalin (EGR)Układ zarządzania silnikiem (ECM/PCM)Układ zasilania paliwemUkład doładowania (turbosprężarka)Układ emisji spalin
Related codes
P0401Średni
Recyrkulacja spalin (EGR) — niewystarczający przepływ
Układ napędowy
Sprawdź szczegóły →Suggested Hybspec services
Based on the systems affected by this code, we will most likely start with:
Does code P3350 require professional diagnostics?
The code alone is not enough. To find the cause, you need to read live data, check freeze frame conditions, and compare with vehicle behavior. Book a diagnostic session.