P1216

DTC P1216 Fuel Solenoid Response Time Too Short






Circuit Description

The injection pump delivers fuel to individual cylinders by opening and closing a solenoid control fuel valve. The PCM monitors the amount of time it takes for the fuel solenoid valve to physically close after commanded to close. Closure time out of range is seen as a fault. This response time is measured in mil seconds. This is a type D DTC.

Conditions for Setting the DTC

^ Battery voltage greater than 10 volts and less than 16 volts.
^ Engine coolant temperature greater than -1°C (34°F).
^ Engine speed greater than 506 RPM.
^ Requested fuel rate is greater than 0.0 mm.
^ Inj. Pump Closure Time less than .75 ms.

Action Taken When the DTC Sets

Possible poor performance or no start.

Conditions for Clearing the MIL/DTC

^ A History DTC will clear when forty consecutive warm-up cycles that the diagnostic does not fail (coolant temperature has risen 5°C (40°F) from start up coolant temperature and engine coolant temperature exceeds 71°C (160°F) that same ignition cycle).
^ Use of a scan.

Diagnostic Aids

If DTC P1216 is set with any other DTCs, diagnose them first. If the vehicle is running close to the DTC setting closure time, vehicle should be checked during cold start ups and during hot conditions

Test Description

Number(s) below refer to the number(s) on the diagnostic table.

2. This step will determine if the ground circuit is open which causes the vehicle not to start.

3. This step will determine if the signal circuit is open or an injection pump (fuel solenoid) is a fault.