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
P0588
Cruise Control Vent Control Circuit High
Generic
Vehicle Speed and Idle Control System
Low severity
P0590
Speed Control Multiplexed Switch Performance
Generic
Vehicle Speed and Idle Control System
Low severity
P0591
Speed Control Multiplexed Switch Performance
Generic
Vehicle Speed and Idle Control System
Low severity
P0594
Cruise Control Servo Control Circuit/Open
Generic
Vehicle Speed and Idle Control System
Low severity
P0595
Speed Control Servo Control Circuit Low
Generic
Vehicle Speed and Idle Control System
Low severity
P0596
Speed Control Servo Control Circuit High
Generic
Vehicle Speed and Idle Control System
Low severity
P0598
Thermostat Heater Control Circuit Low
Generic
Vehicle Speed and Idle Control System
Medium severity
P0599
Thermostat Heater Control Circuit High
Generic
Vehicle Speed and Idle Control System
Medium severity
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