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These are books containing info on repair, service, troubleshooting, parts info, assembling dissemble, removal, error/fault codes, wiring diagrams and everything on any vehicles cars, atv, trucks. forklifts, boats, excavators etc
These are books containing info on repair, service, troubleshooting, parts info, assembling dissemble, removal, error/fault codes, wiring diagrams and everything on any vehicles cars, atv, trucks. forklifts, boats, excavators etc
These are books containing info on repair, service, troubleshooting, parts info, assembling dissemble, removal, error/fault codes, wiring diagrams and everything on any vehicles cars, atv, trucks. forklifts, boats, excavators etc
What year an model SAAB ? U - codes are communication network trouble codes . All the control modules , PCM/ECM - BCM , ABS , air bag etc... all share info on this serial data communication net work . When a module goes off line or wiring problems set these type codes . Your best bet , take it to a qualified repair shop.
Take it to a ASE certified repair facility ,they'll fix it up ! Don't just replace parts !!!!!
P0171 - is a lean code bank 1 -possible vacuum leak , low fuel pressure , plugged fuel filter ,
P0300 - is a random misfire code which is understandable with a lean code .
P0420 As the code description implies the P0420 code means that the vehicle's control module has detected that the three-way catalytic converter is not working properly (is not as efficient as the factory is expecting). Replacing the oxygen (O2) sensors may sometimes fix the code, but in most cases the catalytic convert needs to be replaced to fix the problem. If the P0420 code is combined with other codes, try fixing the other codes first
P0452 - EVAP Control System Pressure Sensor Low Input
P0446 - Evaporative Emission Vent System Performance
P0453 - Fuel Tank Pressure Sensor Circuit High Voltage
P1639 - PCM 5 Volt Reference Voltage Circuit Condition
P1653 - Power Steering Output Circuit Malfunction
P1651 - Fan 1 Relay Control Circuit
If you don't know what your doing take it to a repair shop before you waste your money ! You have a lot of problems here an I don't think the computer is bad , I'd say lack of maintenance ! You need to learn how to test thing's to fix them ! From the five volt reference voltage code , I'd say one of your sensors is shorted internally bring down the ref. voltage circuit causing the no start, but then again the 5volt ref. circuit in the PCM could be the problem . What you need to do is Disconnect all sensors that receive 5volt ref. signal one at a time an see if it will start . If I knew what year vehicle yours is I could tell you what sensors ! MAP, TPS , etc...
code P1651 cooling fan 1 relay control circuit malfunction conditions. possible causes cooling fan relay 1 circuit is open short to ground or to battery plus. cooling fan relay 1 power circuit is open test cool fan 1 fuse or the related fuse link to G or maxi fuse. cooling fan relay 1 damaged or has failed. PCM has failed. replace cooling fan relay and fuse see what happens. code P0300 MEANS YOU HAVE MULTIPLE ENGINE MISFIRE DETECTED CONDITIONS.
You should check out www.reliable-store.com they have info on repair, service, wiring diagram, electrical diagram, fuse diagram, torque specs,
troubleshooting, PCV, gear box, owner's/service/repair/parts manual, fault codes, error codes, etc everything on all vehicles. must check it out
Take the vehicle to one of the major Auto parts stores and ask then to connect their scanner to your vehicle and identify the fault code that is stored. That will tell you where to look and what has faulted. Once you get the code you can get the new part there at the store and a Haynes Repair manual on your vehicle to do the repair yourself.
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