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

P1647 Issue in engine speed signal circuit
Honda Vehicle Speed and Idle Control System High severity
P1655 Issue in Engine control module (ECM)
Honda Computer Output Circuit High severity
P1660 Communication error between ECM and Transmission control module (TCM)
Honda Computer Output Circuit High severity
P1679 Issue in RSCD circuit
Honda Fuel and Air Metering High severity
P1683 Issue in throttle valve default position
Honda Fuel and Air Metering High severity
P1684 Issue in throttle valve position
Honda Fuel and Air Metering High severity
P1687 High voltage detected in Auto Transmission signal
Honda Transmission System High severity
P1706 Open circuit detected in gear switch
Honda Transmission System High severity
P1730 Issue in gear shift system
Honda Transmission System High severity
P1732 Issue in gear shift system
Honda Transmission System High severity
P1734 Issue in gear shift system
Honda Transmission System High severity
P1740 Issue in clutch pressure switch
Honda Transmission System High severity
P1750 Mechanical problem detected in hydraulic control system of Auto Transmission clutch
Honda Transmission System High severity
P1753 Issue in torque converter clutch circuit
Honda Transmission System High severity
P1790 Issue in Throttle position sensor circuit
Honda Fuel and Air Metering High severity

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