P0171Średni
Zbyt uboga mieszanka — Bank 1
Układ napędowy
Sprawdź szczegóły →P1130
ŚredniAir/Fuel Mixture Sensor Circuit Range/Performance Malfunction (Bank 1, Sensor 1). Manufacturer code — most often concerns Toyota, Lexus, Ford, and Nissan/Infiniti vehicles.
OBD-II (EN): O2 Sensor Circuit Range/Performance (Bank 1, Sensor 1)
Code P1130 is a manufacturer-specific fault, most often related to incorrect operation of the air/fuel mixture sensor (Bank 1, Sensor 1) — mainly concerning Toyota, Lexus, Ford, and Nissan vehicles. It can cause increased fuel consumption, unstable engine operation, and emission problems. Precisely determining the cause requires diagnosis with an OBD-II scanner and electrical measurements — a visit to a workshop is recommended.
Symptoms
Check Engine Light (MIL) on Abnormal engine idle (jerking, unstable operation) Increased fuel consumption Weakened engine performance and acceleration Possible emission problems (failed emissions test) Smell of unburned fuel from the exhaust system
Possible causes
Worn or faulty Air/Fuel ratio sensor or oxygen sensor (Bank 1, Sensor 1 — pre-catalyst) Damaged wiring, chafed wire, or corroded sensor connector Exhaust leak in the exhaust system before the sensor (manifold gasket, pipe) Sensor contamination by engine oil or coolant Incorrect fuel pressure (fuel pump, pressure regulator, clogged filter) Leaking or clogged fuel injectors Faulty engine control module (PCM/ECM) — rarely
Affected systems
układ paliwowyukład wydechowyczujnik tlenu / A/Fzarządzanie silnikiem (ECM/PCM)układ emisji spalin
Related codes
P0130Średni
Czujnik tlenu (O2) bank 1, sensor 1 — usterka obwodu
Układ napędowy
Sprawdź szczegóły →P0131Średni
Sonda lambda bank 1 sensor 1 — niskie napięcie
Układ napędowy
Sprawdź szczegóły →P0133Średni
Sonda lambda bank 1 sensor 1 — powolna reakcja
Układ napędowy
Sprawdź szczegóły →P0172Średni
System zbyt bogaty — bank 1
Układ napędowy
Sprawdź szczegóły →Code P1130 appears in these brands
Go to messages and symptoms for your brand — there we analyze this code together with other typical alerts.
Suggested Hybspec services
Based on the systems affected by this code, we will most likely start with:
Does code P1130 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.