NOTE: If a module or component is suspected and the vehicle continues to be covered by the manufacturer's warranty, refer to the warranty manual before installing a new module/component (subsection B1.2), or determine if there is any previously approved special program in operation.
NOTE: Universal Scan Tools cannot read the listed codes or can only read 5-digit codes. Match the 5 digits from the scan tool with the first 5 digits of the listed 7 digit code to identify the problem (the last 2 digits give additional information read by the diagnostic system approved by the manufacturer).
NOTE: Always use a digital multimeter when performing voltage or resistance tests (DMM) accurate to three decimal places and with a modern calibration certificate. When testing resistance, always consider the resistance of the DMM wires.
NOTE: Before starting diagnostic programs using Pinpoint tests, check and correct basic problems.
NOTE: If DTCs are logged and there is no problem after performing Pinpoint tests, an intermittent problem may be the cause. Always check for loose connections and corroded contacts.
| DTC | Description | Possible reason | Action |
| P008821 | Fuel rail/system pressure too high | Check pressure regulator related DTCs and refer to appropriate DTC Index | |
| P008822 | Fuel rail/system pressure too high | Check for fuel leaks. Refer to the electrical circuit diagrams and check the flow regulator circuit for a short to ground or open circuit Install a new high pressure fuel pump if necessary | |
| P008824 | Fuel rail/system pressure too high | Check for fuel leaks. Refer to electrical circuit diagrams and check pressure regulator circuit for short to ground, short to power, or open circuit. Install a new pressure regulator if necessary | |
| P008827 | Fuel rail/system pressure too high | Check the low and high pressure systems for fuel leaks, check for additional DTCs and refer to the DTC Index | |
| P009B00 | Fuel Pressure Bypass Valve Control Circuit/Open | Pressure Regulator Circuit - Open Load | Perform pinpoint tests related to this DTC using the manufacturer's approved diagnostic system |
| P009C00 | Low signal level in the fuel pressure bypass valve control circuit | Pressure regulator control circuit - short to ground | Perform pinpoint tests related to this DTC using the manufacturer's approved diagnostic system |
| P009D00 | High signal level in the fuel pressure bypass valve control circuit | Pressure Regulator Control Circuit - Short to Power | Perform pinpoint tests related to this DTC using the manufacturer's approved diagnostic system |
| P009E00 | Fuel Pressure Bypass Valve Control Operation/Stuck Off | Pressure regulator cascade overheating | Refer to electrical diagrams and check pressure regulator for high resistance; if no fault is found, install a new ECM. Refer to the new module/component installation note at the top of the DTC Index. |
| P031300 | Misfire detected at low fuel level | Low Fuel - Misfire caused by the ECM as a warning to the driver before shutting down | Perform pinpoint tests related to this DTC using the manufacturer's approved diagnostic system |
| P115A68 | Low Fuel Level - Forced Power Limitation (informational DTC only) | Low fuel level - second warning after turning on the indicator on the instrument panel | Check for additional DTCs and refer to the appropriate DTC Index. |
| P115B68 | Low fuel level - forced engine shutdown (informational DTC only) | Check fuel level. Check for additional DTCs and refer to the appropriate DTC Index. | |
| P226600 | Low voltage in the electrical circuit of the fuel sensor | Short circuit to ground of the water indicator in the fuel filter | Perform pinpoint tests related to this DTC using the manufacturer's approved diagnostic system |
| P226700 | High voltage in the electrical circuit of the fuel sensor | Short circuit to the battery water indicator in the fuel filter | Perform pinpoint tests related to this DTC using the manufacturer's approved diagnostic system |
| P228800 | Too high pressure in the injector control unit | Check for fuel leaks. Refer to the electrical circuit diagrams and check the high pressure fuel pump circuit for a short to ground or open circuit. Install a new high pressure pump if necessary |
Comments on this article