DTC P0313 for Saturn L300/LW300 2000
Circuit Description
If this DTC is set, and no misfire is currently present, the vehicle may simply
have been run while low on fuel. This DTC being present with a properly functioning
fuel sender circuit eliminates the need for a lengthy misfire diagnosis. In any case,
a misfire must have been detected. Verify that there is an adequate fuel supply in
the tank.
DTC Parameters
DTC P0313 will set when a misfire has been detected along with the following
events:
| • | Condition exists for longer than 30 seconds |
| • | Fuel tank contains less than 2.9 gallons of fuel |
| • | Engine speed between 520 and 6520 rpm |
| • | Traction control is not active |
| • | Engine has been running more than 5 seconds |
| • | IAT greater than -8°C (17°F) |
| • | EVAP diagnosis is not active |
| • | No TP or CKP codes are set |
Important: The misfire diagnostics are continually checked with the engine running when
the above conditions have been met.
P0313 is a (type D) DTC.
Diagnostic Aids
When attempting to diagnose an intermittent problem, use the Scan tool to review
malfunction history diagnostic information. This supplemental data can be used to
duplicate a problem.
If an injector, IC, or EGR DTC is active and the misfire DTC is active, diagnose
the other DTCs first.
Use the scan tool to monitor active misfire counts. If a specific cylinder misfires
under certain load conditions, it may be duplicated in the stall.
| • | Injector resistance = 14-23 ohms |
| • | Coil Pack Secondary Resistance = 8 to 15 K ohms |
| • | Wire Positioning on Coils - 1,3,5 2,4,6 |
