The fault code P1621 can be caused by two main factors: a faulty Powertrain Control Module (PCM) and low car battery voltage. Fixing Code P1621: Simple Steps To Resolve The Issue! To fix the p1621 fault code, start by visually inspecting the wiring harness, connectors, and components for any damage or corrosion.

The P1621 code indicates a problem with the control module's long-term memory performance. This means that the vehicle's onboard computer is having difficulty storing and retrieving information over an extended period of time.

2019年9月1日 · Repair Information for P1621 code. Learn what Control Module Long Term Memory Performance Condition means, location and how to repair?

Subject: Control Module Diagnostic Trouble Code(s) (DTC)(s) P0601, P0602, P0603, P0604, P0606, P062F, P1621, P16F3 Shared In Multiple Modules Models: 2015 and Prior GM Passenger Cars and Light Duty Trucks Attention: This Bulletin also applies to any of the above models that may be Export vehicles.

I have a 2014 Isuzu dmax with fault code p1621. I know this is the ECM but what do I need to do to fix or diagnose the

2011年3月13日 · It is a common code that pops up with bully dog programmers. Search here for say the code ' P1621 ' and see if there is a fix. Brian

2016 grand caravan, p1621 and p1622. traced the problem to the wiring harness under the battery. battery acid had entered the harness and corroded the wires. the harness sheathing itself was not damaged. once i cut the harness open the problem was evident.

2019年9月1日 · Code P1621 GMC Description. The Powertrain Control Modules (PCM) Electronically Erasable Programmable Read Only Memory (EEPROM) contains data essential to running the engine and transmission. The PCM stores critical preprogrammed data within the EEPROM, this data remains even if the vehicles' battery is disconnected.

2009年6月29日 · Basically it means you left your key in the ignition for to long. But i never leave my key in the ignition??? Like I said, it sets when you load the bully dog, and it pops up. This code means absolutely nothing, and will go away as soon as you remove the Bully Dog from your truck.

PSA OBD-II Trouble Code Description for P1621 Peugeot Control module Long term memory performance / Immobiliser code words Not matched The OBD2 Code Information Be Applicable For Peugeot: