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P0100–P0199 fault codes
50 codes in this range have a plain-English write-up, checked by a person.
P0100P0100: the airflow sensor circuit has a faultP0101P0101: the airflow sensor reading doesn't add upP0102P0102: the airflow sensor signal is reading too lowP0103P0103: the airflow sensor signal is reading too highP0104P0104: the airflow sensor circuit cuts in and outP0105P0105: the manifold pressure sensor circuit has a faultP0106P0106: the manifold pressure sensor reading doesn't add upP0107P0107: the manifold pressure sensor signal is reading too lowP0108P0108: the manifold pressure sensor signal is reading too highP0109P0109: the manifold pressure sensor circuit cuts in and outP0110P0110: the intake air temperature sensor circuit has a faultP0111P0111: the intake air temperature reading doesn't add upP0112P0112: the intake air temperature signal is reading too lowP0114P0114: the intake air temperature circuit cuts in and outP0116P0116: the coolant temperature sensor reading doesn't add upP0120P0120: the throttle position sensor circuit has a faultP0121P0121: the throttle position sensor reading doesn't add upP0122P0122: the throttle position sensor signal is reading too lowP0123P0123: the throttle position sensor signal is reading too highP0124P0124: the throttle position sensor circuit cuts in and outP0128P0128: the engine is taking too long to warm upP0130P0130: the front oxygen sensor circuit has a faultP0131P0131: the front oxygen sensor signal is reading too lowP0132P0132: the front oxygen sensor signal is reading too highP0133P0133: the front oxygen sensor is responding too slowlyP0134P0134: the front oxygen sensor isn't responding at allP0135P0135: the front oxygen sensor's heater circuit has a faultP0136P0136: the rear oxygen sensor circuit has a faultP0137P0137: the rear oxygen sensor signal is reading too lowP0138P0138: the rear oxygen sensor signal is reading too highP0139P0139: the rear oxygen sensor is responding too slowlyP0140P0140: the rear oxygen sensor isn't responding at allP0141P0141: the rear oxygen sensor's heater circuit has a faultP0150P0150: bank 2's front oxygen sensor circuit has a faultP0151P0151: bank 2's front oxygen sensor signal is reading too lowP0152P0152: bank 2's front oxygen sensor signal is reading too highP0153P0153: bank 2's front oxygen sensor is responding too slowlyP0154P0154: bank 2's front oxygen sensor isn't responding at allP0155P0155: bank 2's front oxygen sensor heater circuit has a faultP0170P0170: the fuel trim system on bank 1 isn't behaving correctlyP0171P0171: your engine is running leanP0172P0172: your engine is running richP0173P0173: the fuel trim system on bank 2 isn't behaving correctlyP0174P0174: bank 2 of your engine is running leanP0175P0175: bank 2 of your engine is running richP0190P0190: the fuel rail pressure sensor circuit has a faultP0191P0191: the fuel rail pressure reading doesn't add upP0192P0192: the fuel rail pressure sensor circuit is reading lowP0193P0193: the fuel rail pressure sensor circuit is reading highP0194P0194: the fuel rail pressure sensor circuit cuts in and out