Volkswagen Golf 2013 Quick Reference Specification Book page 242

DTC
P0604 Internal Control Module
Random Access Memory
(RAM) Error
P0605 Internal Control Module Read
Only Memory (ROM) Error
P0606 Internal Control Module
Memory Check Sum Error
P0607 Control Module Performance
P0627 Fuel Pump "A" Control Circuit/
Open
P0628 Fuel Pump "A" Control Circuit
Low
P0629 Fuel Pump "A" Control Circuit
High
P0634 ECM Internal Temperature Too
High
P0638 Throttle Actuator Control
(Bank 1) Range/Performance
P064C Glow Control Unit Module
Error
P0641 Sensor Reference Voltage "A"
Circuit Open
P0651 Sensor Reference Voltage "B"
Circuit Open
P066A Cylinder 1 Glow Plug Control
Circuit Low
P066C Cylinder 2 Glow Plug Control
Circuit Low
P066E Cylinder 3 Glow Plug Control
Circuit Low
P067A Cylinder 4 Glow Plug Control
Circuit Low
230 VW Golf & GTI Quick Reference Specification Book • September 2012
Error Message Malfunction Criteria and
Threshold Value
• Write EEPROM not possible
• Checksum error in 3 or more
locations
• ECM internal ROM self test
failed
• ECM internal self test failed
• Low/high supply voltage
diagnostic signal from output
driver
or
• Failed signal range check with
barometer pressure sensor
(located on ECM circuit
board)
Open circuit signal from output
driver
Grounded circuit signal from
output driver
Over Current signal from output
driver
Current Over-Temperature
diagnostic signal from output
driver > 150 °C
Diagnostic signal from actuator
module = defective state
Wrong GCU build = error
message
Sensor supply voltage < 4.8 V
or > 5.2 V
Sensor supply voltage < 4.8 V
or > 5.2 V
Over current on circuit > 70 A
Over current on circuit > 70 A
Over current on circuit > 70 A
Over current on circuit > 70 A