OBD-II Trouble Codes
3,381 diagnostic trouble codes. Search by code or keyword.
Most Common OBD-II Trouble Codes
P0128P0128 Coolant Temperature Below Thermostat RegulationMinorP0171P0171 Fuel Trim System Too Lean (Bank 1)MinorP0174P0174 OBD-II: System Too LeanModerateP0300P0300 Random/Multiple Cylinder Misfire DetectedSeriousP0401P0401 Exhaust Gas Recirculation "A" Flow Insufficient DetectedSeriousP0420P0420 Catalyst System Low EfficiencyModerateP0440P0440 Evaporative Emission System MalfunctionModerateP0442P0442 OBD-II: Small Leak Detected in Evaporative Emission SystemModerate
P00
P0001 - P00FF (189)
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P01
P0100 - P01FF (136)
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P02
P0200 - P02FF (231)
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P03
P0300 - P03FF (105)
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P04
P0400 - P04FF (167)
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P05
P0500 - P05FF (125)
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P06
P0600 - P06FF (206)
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P07
P0700 - P07FF (186)
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P08
P0800 - P08FF (130)
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P09
P0900 - P09FF (109)
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P0A
P0A00 - P0AFF (250)
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P0B
P0B00 - P0BFF (240)
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P0C
P0C00 - P0CFF (118)
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P20
P2001 - P20FF (220)
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P21
P2100 - P21FF (130)
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P22
P2200 - P22FF (100)
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P23
P2300 - P23FF (48)
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P24
P2400 - P24FF (98)
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P25
P2500 - P25FF (135)
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P26
P2600 - P26FF (140)
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P27
P2700 - P27FF (115)
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P28
P2800 - P28FF (87)
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P2A
P2A00 - P2AFF (12)
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P2B
P2B00 - P2BFF (1)
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P30
P3001 - P30FF (1)
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P31
P3100 - P31FF (1)
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P34
P3400 - P34FF (98)
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