P0605 OBD II Trouble Code Internal Control Module Read Only Memory (ROM) Error

How to troubleshoot and repair a P0605 code which refers to an internal ROM read only memory error in a control module in the PCM Processor Fault. Also includes links to relevant forum topics on the code.

Symptoms of P0605 OBD II Trouble Code

  • There is an internal fault in the PCM / ECM
  • Using an aftermarket performance programmer may trigger this code

Common Causes of P0605 OBD II Trouble Code

  • New ECM installed, same P0605 code 04 Nissan SentraAnyone ever seen this, it even has the dealer stumped... Driving an '04 Nissan Sentra 1.8L, the CEL came on, and the throttle was disabled (I found out later the ECM enters a "safe mode" on a P0605 code, and disables the throttle. this car uses an electric wire and motor to operate the throttle, no... 
  • jaguar 1996 p0605 and p0305p0605 and p0305 how can i fix these codes... 
  • 02 grand caravan transmission code P0700 P0456 P0605I have a 02 gran caravan sport 3.3L the tachometer is higher than usual and it seems like it is not shifting out of 2nd gear. need help before taking it to a transmission shop.... 
  • 2006 F-150 remote starter installed now P0104, P0605, & B1352I had a Viper 7345V Remote starter installed in my 2006 F150 (Feb 10,2016), on Feb 11, check engine light came on. I returned to the installer to question if the remote starter install may have anything to to with the check engine light now on. Told No. So I went to a auto repair shop to have th... 
  • 2001 2.4L Chrysler Sebring P0700 P0705 P0605Hello, I'm new to the forum here. Having some issues with my 2001 Chrysler Sebring Sedan, 2.4L-4cyl automatic. Threw a few engine codes a while ago while idling in a store parking lot and seems to be stuck in "limp" mode (perpetual 2nd or 3rd gear, driving at high rpm everywhere and engine starting ... 
  • pt cruiser P0605, P0700, and P1391What does P0605, P0700, and P1391 mean....I just put in a new catalyst on my car for smog but light engine turned back on...and I can't seem to know what is wrong ...please help me out here... 
  • Code P0605 History / California DMV Smog CheckRE: VW Cabrio 2002 I had a prior "Check Engine" light event with the following codes: P0605 P0103 These were cleared and were fine for 9 months until... I had an immobilizer issue (keys needed to be adopted) after I installed an aftermarket radio (Disconnected battery to install). Keys were f... 
  • 2002 pt cruiser in limp mode p0605 p0551 p0700I've got a 2002 chrysler pt cruiser (auto), and the transmission has entered limp mode. i had advace auto parts hook it up to their obd ii scanner and they were clueless as to the errors i received. heres what i;ve got: p0605 PCM Read only memory (ROM) error p0551 Power steering pressure sensor ck... 
  • 2011 Ford Focus p0605I have a focus with 34,000 miles that is driven low miles daily. The last 2 weekends I have taken trips approximately 100 miles.both times the check engine light came on with code P0605. The car ran fine but I am wondering why this is happening. Also I realize the car is 5 yrs old but with the low ...