Fault codes P1100–P1199
P11xx codes mainly cover: fuel mixture, oxygen (lambda) sensors, idle and throttle. Our list has 27 codes in this range. With most of them you can drive gently, but get the car checked soon. Repairs cost roughly €50–700, depending on the fault. The most common are P1120, P1121, P1125. Based on AI combined with our hands-on workshop experience and knowledge.
Most common in this range
P1120Accelerator pedal position sensor: circuit faultP1121Accelerator pedal position sensor: implausible readingP1125Throttle control motor circuit faultP1126Throttle magnetic clutch: circuit faultP1127Electronic throttle actuator supply faultP1128Long-term fuel trim too lean, multiplicative (bank 1)P1129Long-term fuel trim too rich, multiplicative (bank 1)P1130Long-term fuel trim too lean, multiplicative (bank 2)
All codes in this range
P1120Accelerator pedal position sensor: circuit faultP1121Accelerator pedal position sensor: implausible readingP1125Throttle control motor circuit faultP1126Throttle magnetic clutch: circuit faultP1127Electronic throttle actuator supply faultP1128Long-term fuel trim too lean, multiplicative (bank 1)P1129Long-term fuel trim too rich, multiplicative (bank 1)P1130Long-term fuel trim too lean, multiplicative (bank 2)P1131Long-term fuel trim too rich, multiplicative (bank 2)P1132Front oxygen sensor not switching, reads rich (bank 1)P1133Air/fuel ratio sensor slow to respond (bank 1, sensor 1)P1134Oxygen sensor transition time ratio wrong (bank 1, sensor 1)P1135Air/fuel ratio sensor heater: circuit fault (bank 1, sensor 1)P1136Fuel trim too lean, additive (bank 1)P1137Fuel trim too rich, additive (bank 1)P1138Fuel trim too lean, additive (bank 2)P1139Fuel trim too rich, additive (bank 2)P1148Closed-loop mixture control not working (bank 1)P1150Air/fuel ratio sensor: implausible reading (bank 2, sensor 1)P1151Front oxygen sensor not switching, reads lean (bank 2)P1152Front oxygen sensor not switching, reads rich (bank 2)P1153Air/fuel ratio sensor slow to respond (bank 2, sensor 1)P1155Air/fuel ratio sensor heater: circuit fault (bank 2, sensor 1)P1168Closed-loop mixture control not working (bank 2)P1181EGR valve control (diesel)P1188Fuel control (bank 1, sensor 1)P1189Fuel control (bank 2, sensor 1)
Want a definite answer?
Bring the car to our workshop in Estonia for diagnostics. We read the fault codes, test the sensors and tell you what is wrong. Repair price depends on the work involved, generally €45 per hour.