Conditions for Setting the DTC
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2018 GMC Yukon XL, 2018 GMC Yukon, 2018 Chevrolet Tahoe, 2018 Chevrolet Suburban, and 2018 Cadillac Escalade ESV. However, it is still accessible from the selected car via links, so may be relevant.
P0089
Q18 Fuel Pressure Regulator = Not Within 0 to 240° - For greater than 10 s
P00C6
| Desired Fuel Rail Pressure - Ignition/Vehicle=On & Engine=Off | Engine Run Time | Engine Coolant Temperature | Fuel Rail Pressure |
|---|---|---|---|
| Less than desired | 11 s | -40°C (-40°F) Use minus sign.-1 | Actual pressure is not equal to the desired pressure |
| Less than desired | 3 s | 20 to 95°C (68 to 203°F) | Actual pressure is not equal to the desired pressure |
| Less than desired | 5 s | Greater than 112°C (234°F) | Actual pressure is not equal to the desired pressure |
| Greater than desired | During the first 10 engine revolutions. | Less than -10°C (14°F) Use minus sign.-1 | Pressure drops greater than 2 MPa (290 PSI) |
| Greater than desired | During the first 10 engine revolutions. | 0 to 8°C (32 to 46°F) | Pressure drops greater than 0.6 MPa (87 PSI) |
| Greater than desired | During the first 10 engine revolutions. | Greater than 8°C (46°F) | Pressure drops greater than 0.5 MPa (73 PSI) |
P228C, P228D, P2C1F, P2C20
The following parameters are not within 3 MPa (435 PSI) of each other :
- Desired Fuel Rail Pressure
- Fuel Rail Pressure
The above condition(s) must occur for greater than 30 s. - At Idle Speed
P2C1E
G18 High Pressure Fuel Pump - Control = Greater than the maximum threshold
The above condition(s) must occur for greater than 10 s.