Obd code 1627 ,1999 4 cylinder isuzu rodeo

Code P1000 is nothing , just the codes were cleared or battery was disconnected ,that's all that means . Does the O/D light flash ?
P1000 - OBD (On Board Diagnostic) System Readiness Test Not Complete The OBD monitors are performed during the OBD Drive Cycle. The P1000 will be stored in continuous memory if any of the OBD monitors do not complete their full diagnostic check.

• Vehicle is new from the factory
• Battery or PCM had recently been disconnected
• An OBD monitor failure had occurred before completion of an OBD drive cycle
• PCM DTCs have recently been cleared with a scan tool
• PTO circuit is shorted to VPWR or B+ or PTO is on during testing

The Ford P1000, inspection/maintenance (I/M) readiness function is part of the PCM strategy. A battery disconnection or clearing codes using a scan tool results in the various I/M readiness bits being set to a "not-ready" condition. As each non-continuous OBD monitor completes a full diagnostic check, the I/M readiness bit associated with that monitor is set to a "ready" condition. This may take 1 or 2 drive cycles based on whether malfunctions are detected or not. The readiness bits for comprehensive component monitoring, misfire and fuel system monitoring are considered complete once all the non-continuous monitors have been evaluated. Because the EVAP system monitor requires certain ambient conditions to run, special logic can "bypass" the monitor for purpose of clearing the EVAP system I/M readiness bit due to continued presence of these extreme conditions.
Note: The P1000 does not need to be cleared from the PCM except to pass an I/M test.

does it have spark ? pull a plug wire an check , does it have fuel pressure ? Did you do the diagnostic test's for each code ?
2001 isuzu rodeo CEL light codes P1515 P1295 P1125

Go to the link below to look them up. Complete List of OBD Codes Generic OBD2 OBDII Manufacturer Car OBD...

Try this or look on Yourube for a video

https://www.google.co.uk/amp/s/www.autocodes.com/amp/codes/p1299_ford.html

Have a look here.
P0304 OBD II Code

Normally a shop would use a scanner to watch the operation of the EGR valve and sensor.
Code 401 means the sensor is telling the computer the flow is not enough. So the problem could be the sensor rather than the EGR valve. And yes one of the ports could be blocked too.

PO300 is a OBD II code for a random multiple cylinder misfire detection. Meaning any one or more than one of the engines cylinders is not firing at different times. Any number of malfunctions can cause this.To determine what repairs are needed, i recommend the engine to be diagnosed with a scantool and oscilloscope to monitor the crank sensor signal and other inputs to the computer.
I hope this information is helpful.

well clear code and drive it about 50 to 100 miles to try reset the monters and see if light stay out if so go get it smog so the system that could couse this is a bad wireing harness this may be hard for you to diagnosis this system put if you want me to help you can emaile me and i will send you the hole diagnosis chartDTC P1340 ION Sensing Module Cylinder ID Fault (Cylinder Synchronization Fail)

cant do it here to big

No...the fuel sending unit is not a computer driven item nor is it monitored in any way by the onboard computer system. Interface with scanner and retrieve code(s) associated with indicator lamp occurrance

p1627: [driver "1" input high voltage]...

I believe the PCM was expecting a signal from a sensor (which one I don't know) that should be low voltage and instead was high voltage and therefore triggered a DTC for that sensor...I will guess a bad O2 sensor...

code may also be cleared by disconnecting battery negative wire for 30 seconds...remember to reset your clock and radio settings...

sorry that is all I can find...please rate me solved