What does a stored code p0620 mean?
Although generic, the exact repair steps may vary depending on year, make, model and powertrain configuration. A stored code P0620 means that the powertrain control module (PCM) has detected a malfunction with the generator control circuit. The PCM typically energizes and monitors the generator control circuit whenever the engine is running.
What to do if a p022 set comes back?
If the initial P022 sets and other codes are present then erase all codes and do five camshaft drive cycles and then re-investigate which codes come back. If any of these codes are present disregard and erase. If they come back it is electrical wiring or connection failure.
What do you need to know about a p0620 generator malfunction?
A diagnostic scanner, a battery/alternator tester, a digital volt/ohmmeter (DVOM), and a source of reliable vehicle information will be required to diagnose a code P0620. Search you vehicle information source for technical service bulletins (TSB) that parallel the code stored, vehicle (year, make, model, and engine), and symptoms exhibited.
Why does my p0620 power supply keep resetting?
If all fuses and relays are functioning normally, suspect that the alternator/generator is bad. If the alternator is charging and the P0620 continues to reset, use the DVOM to test controller power supply fuses and relays. Replace blown fuses as required.
What causes the p0620 OBD-II trouble code?
Under some operating conditions, the PCM can turn off the five-volt signal and, thus, turn off the generator too. The PCM also has fault-detection circuitry to monitor these operations. If it detects an unexpected voltage or any other problem, it can cut or reduce the power. This is also when the P0620 code gets stored. What causes the P0620 code?
Where is the p0620 code stored in the ECM?
Code P0620 is stored when the ECM detects a voltage other than what was anticipated. The PCM controls your vehicle’s generator through a generator turn-on signal circuit, allowing it to turn the generator off and on.
What is the resistance of a Ford p0620?
If the voltage regulator is bad (and causing the trouble codes: P0620 or P0622), your multimeter will register a resistance much higher than the 1.2 to 1.6 K Ohms. It will usually be around 60+ K Ohms or more. Let’s interpret your test result: CASE 1: The multimeter recorded the indicated resistance.
What does p0620 stand for in Powertrain Control Module?
A stored code P0620 means that the powertrain control module (PCM) has detected a malfunction with the generator control circuit.