P014E

Symptoms

• Check Engine light on dashboard
• Slight increase in fuel consumption
• Increased harmful emissions (CO, HC)
• The scanner shows a “slow” or “sluggish” signal from sensor 1 bank 2
• Possible long-term fuel trims outside normal limits

Causes

• Degradation of the zirconium sensor element of the oxygen sensor (natural wear)
• Contamination of the sensor with lead, silicone or oil from exhaust gases
• Partial failure of the heating element (the sensor does not warm up well)
• Poisoning of the sensor by fuel additives or antifreeze due to leakage into the cylinders
• Sensor overheating due to rich mixture or ignition problems

How to Fix

1. Read codes and check Bank 2 Long Term Fuel Trims (LTFT)
2. Observe in real time the switching signal of sensor 1 of bank 2 - Rich-to-Lean time should not exceed 150 ms
3. Check the sensor heater (resistance 2–20 ohms)
4. Inspect the sensor for mechanical damage and traces of contamination
5. Check for oil or antifreeze in the exhaust gases
6. If the sensor responds slowly when the engine is warm and the heater is working, replace the oxygen sensor

Related codes

Error P014E by Vehicle Brand