P0602 Buick Powertrain Control Module Programming Error
Possible causes
– Powertrain Control Module (PCM) not programed
– PCM program
– Faulty PCM
– Wrong PCM
– PCM program
– Faulty PCM
– Wrong PCM
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
P0602 Buick Description
This diagnostic trouble code (DTC) indicates that the Powertrain Control Module (PCM) internal EEPROM is not flashed with any vehicle software. If you install a service PCM and do not flash the EEPROM, the engine will not run. This DTC indicates that an un-flashed PCM causes the engine cranks but will not run situation.
Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David Dunbar Buick – Buick Century – Buick LaCrosse – Buick LeSabre – Buick Lucerne – Buick Park Avenue – Buick Regal – Buick Verano – Buick Enclave – Buick Encore – Buick Rainier – Buick Rendezvous – Buick Terraza – Buick Riviera