OBD fault code library
Look up any P or U code to see what it means, what causes it, the parts involved and how it gets fixed.
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Fault codes
P1124
Long Term Fuel Trim Adjustment Bank 1 System Too Lean
Skoda
Fuel and Air Metering
High severity
P1126
Long Term Fuel Trim Adjustment Bank 2 System Too Lean
Skoda
Fuel and Air Metering
High severity
P1135
HO2S Heater Circuit- Bank 1 & 2 Sensor 2 Electrical Malfunction
Skoda
Fuel and Air Metering
Medium severity
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