Fault codes P0600–P0699
P06xx codes mainly cover: engine computer and electrics, battery, charging and glow plugs, fuel and air. Our list has 98 codes in this range. 4 of them mean you shouldn't keep driving. Repairs cost roughly €30–1200, depending on the fault. The most common are P0600, P0601, P0603. Based on AI combined with our hands-on workshop experience and knowledge.
Most common in this range
P0600Control modules can't communicate with each otherP0601Fault in the engine computer memoryP0603Engine computer lost its learned valuesP0606Fault in the engine computer processorP0620Fault in alternator controlP0627Fault in fuel pump controlP0641Sensor supply voltage has dropped outP0670Fault in the glow plug control module
All codes in this range
P0600Control modules can't communicate with each otherP0601Fault in the engine computer memoryP0602Control module: internal memory or software fault (programming)P0603Engine computer lost its learned valuesP0604Control module: internal memory or software fault (RAM)P0605Control module: internal memory or software fault (ROM)P0606Fault in the engine computer processorP0607Control module: reading or operation not rightP0608Control module: circuit fault ("A")P0609Control module: circuit fault ("B")P0610Control module: errorP0611Injector: reading or operation not right (injector module)P0612Injector module relay: circuit fault (injector module)P0613Control module: internal memory or software fault (gearbox)P0614Control module: readings don't match (gearbox)P0615Starter relay: circuit faultP0616Starter relay: signal or voltage too lowP0617Starter relay: signal or voltage too highP0618Alternative fuel control module: internal memory or software fault (keep-alive memory)P0619Alternative fuel control module: internal memory or software fault (RAM)P0620Fault in alternator controlP0621Charging warning lamp: circuit fault ("L")P0622Alternator and charging: circuit fault ("F")P0623Charging warning lamp: circuit faultP0624Fuel cap warning lamp: circuit faultP0625Alternator and charging: signal or voltage too lowP0626Alternator and charging: signal or voltage too highP0627Fault in fuel pump controlP0628Fuel pump: signal or voltage too low ("A")P0629Fuel pump: signal or voltage too high ("A")P0630Control module VIN: VIN not programmed or mismatch (engine)P0631Control module VIN: VIN not programmed or mismatch (gearbox)P0632Control module: internal memory or software fault (engine)P0633Immobiliser: internal memory or software fault (engine)P0634Control module internal temperature: temperature too high (gearbox)P0635Power steering control circuit: circuit faultP0636Power steering control circuit: signal or voltage too lowP0637Power steering control circuit: signal or voltage too highP0638Throttle actuator: reading or operation not right (bank 1)P0639Throttle actuator: reading or operation not right (bank 2)P0640Intake air heater: circuit faultP0641Sensor supply voltage has dropped outP0642Sensor reference voltage: signal or voltage too low (reference voltage, "A")P0643Sensor reference voltage: signal or voltage too high (reference voltage, "A")P0644Module communication: circuit faultP0645A/C compressor clutch relay: circuit faultP0646A/C compressor clutch relay: signal or voltage too lowP0647A/C compressor clutch relay: signal or voltage too highP0648Immobiliser warning lamp: circuit faultP0649Cruise control lamp: circuit faultP0650Engine warning light circuit: circuit faultP0651Sensor reference voltage: open circuit (reference voltage, "B")P0652Sensor reference voltage: signal or voltage too low (reference voltage, "B")P0653Sensor reference voltage: signal or voltage too high (reference voltage, "B")P0656Fuel level output signal: circuit faultP0657Actuator supply voltage: open circuit ("A")P0658Actuator supply voltage: signal or voltage too low ("A")P0659Actuator supply voltage: signal or voltage too high ("A")P0660Intake manifold tuning valve: open circuit (bank 1)P0661Intake manifold tuning valve: signal or voltage too low (bank 1)P0662Intake manifold tuning valve: signal or voltage too high (bank 1)P0663Intake manifold tuning valve: open circuit (bank 2)P0664Intake manifold tuning valve: signal or voltage too low (bank 2)P0665Intake manifold tuning valve: signal or voltage too high (bank 2)P0666Control module internal temperature sensor: circuit fault (gearbox)P0667Control module internal temperature sensor: reading or operation not right (gearbox)P0668Control module internal temperature sensor: signal or voltage too low (gearbox)P0669Control module internal temperature sensor: signal or voltage too high (gearbox)P0670Fault in the glow plug control moduleP0671Glow plugs: circuit fault (cylinder 1)P0672Glow plugs: circuit fault (cylinder 2)P0673Glow plugs: circuit fault (cylinder 3)P0674Glow plugs: circuit fault (cylinder 4)P0675Glow plugs: circuit fault (cylinder 5)P0676Glow plugs: circuit fault (cylinder 6)P0677Glow plugs: circuit fault (cylinder 7)P0678Glow plugs: circuit fault (cylinder 8)P0679Glow plugs: circuit fault (cylinder 9)P0680Glow plugs: circuit fault (cylinder 10)P0681Glow plugs: circuit fault (cylinder 11)P0682Glow plugs: circuit fault (cylinder 12)P0683Glow plugs: circuit fault (engine)P0684Glow plugs: reading or operation not right (engine)P0685Engine computer power relay: open circuit (control)P0686Engine computer power relay: signal or voltage too low (control)P0687Engine computer power relay: signal or voltage too high (control)P0688Engine computer power relay: open circuit (sense line)P0689Engine computer power relay: signal or voltage too low (sense line)P0690Engine computer power relay: signal or voltage too high (sense line)P0691Radiator fan: signal or voltage too low (no. 1)P0692Radiator fan: signal or voltage too high (no. 1)P0693Radiator fan: signal or voltage too low (no. 2)P0694Radiator fan: signal or voltage too high (no. 2)P0695Radiator fan: signal or voltage too low (no. 3)P0696Radiator fan: signal or voltage too high (no. 3)P0697Sensor reference voltage: open circuit (reference voltage, "C")P0698Sensor reference voltage: signal or voltage too low (reference voltage, "C")P0699Sensor reference voltage: signal or voltage too high (reference voltage, "C")
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.