DTC P1214 Injection Pump Timing Offset. GMC Truck Savana 2000

For 1990-2009 cars only

Makes 🢒 GMC_Truck 🢒 2000 🢒 Savana 🢒 Engine 🢒 Engine Controls - 6.5L (L65) 🢒 DTC P1214 Injection Pump Timing Offset

Engine Controls Components
Sensor Controls: CKP, Boost Pressure Sensor, IAT, ECT
OBD II Symbol Description Notice
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice

Circuit Description

The powertrain control module (PCM) has the ability to determine the amount of offset needed to bring the engine to top dead center (TDC). This is used by the PCM to determine proper injection time.

Conditions for Running the DTC

The ignition is in the ON position.

Conditions for Setting the DTC

•	TDC offset more than 2.46 degrees

•	TDC Offset less than -2.46 degrees

Action Taken When the DTC Sets

•	The PCM illuminates the malfunction indicator lamp (MIL) on the second consecutive drive trip the diagnostic runs and fails.

•

The PCM records the operating conditions at the time the diagnostic fails. The first time the diagnostic fails, the Failure Records store this information. If the diagnostic reports a failure on the second consecutive drive trip, the Freeze Frame records the operating conditions at the time of failure and updates the Failure Records.

Conditions for Clearing the MIL/DTC

•	The PCM will turn the MIL off after 3 consecutive trips without a fault condition.

•	A history DTC clears after 40 consecutive warm-up cycles, if this or any other emission related diagnostic does not report any failures.

•	The scan tool Clear Info function was used.

Diagnostic Aids

The PCM will only run the diagnostic test if the TDC offset adjustment time set procedure has been activated. It is highly unlikely that the vehicle will be brought in with this DTC set. Refer to Fuel Injection Pump Top Dead Center Offset Adjustment .

Step

Action

Values

Yes

Important: Before clearing the DTCs, use the scan tool Capture Info to save the Freeze Frame and Failure Records for reference. The data in the control module is deleted once the Clear Info function is used.

Did you perform the Powertrain On-Board Diagnostic (OBD) System Check?

Go to Step 2

Go to Powertrain On Board Diagnostic (OBD) System Check

Are there any other DTCs set?

Go to the applicable DTC table

Go to Step 3

Clear all of the codes and reset the injection timing until the TDC Offset is between the specified values. Refer to Fuel Injection Pump Top Dead Center Offset Adjustment .

Is the timing within the specified value?

-0.25 to -0.75

Go to Step 6

Go to Step 4

Check the crankshaft position (CKP) sensor for the following conditions:

•	Proper installation

•	A loose or broken sensor mounting tab

Repair the condition as necessary.

Did you perform a repair?

Go to Step 6

Go to Step 5

Important: The new injection pump must be timed.

Replace the fuel injection pump. Refer to Fuel Injection Pump Replacement and to Fuel Injection Pump Timing Adjustment .

Is the action complete?

Go to Step 6

Use the scan tool in order to clear the DTCs.
Start the engine.
Allow the engine to idle until the engine reaches the normal operating temperature.
Select DTC and the Specific DTC function.
Enter the DTC number that was set.
Operate the vehicle within the Conditions for Setting this DTC until the scan tool indicates the diagnostic Ran.

Does the scan tool indicate the diagnostic Passed?

Go to Step 7

Go to Step 2

Does the scan tool display any additional undiagnosed DTCs?

Go to the applicable DTC table

System OK