P0130

Symptoms

• Check Engine light on dashboard
• Noticeable increase in fuel consumption (15–30%)
• Unstable engine operation, especially at idle
• Unstable acceleration, jerking when moving
• Black smoke from the exhaust pipe (rich mixture) or signs of a lean mixture

Causes

• Failure of oxygen sensor bank 1, sensor 1 (depletion of life)
• Poor fuel-air mixture due to air leaks in the intake tract
• Damage to the wiring or lambda probe connector
• Sensor heating element failure
• Sensor contamination with silicone, antifreeze or oil from exhaust gases

How to Fix

1. Read codes and real-time data - look at the voltage of sensor 1 bank 1 with a warm engine
2. Make sure that the sensor heater is working properly (resistance 2–20 Ohms)
3. Check for air leaks in the intake tract (with a smoke generator or aerosol)
4. Check fuel pressure and injector operation
5. Inspect the sensor connector and wiring for damage.
6. If the sensor does not switch or produces a constantly low signal, replace the lambda probe of bank 1, sensor 1

Related codes