Fuel pressure and delivery
Rail pressure, high-pressure pump, regulator and metering valve. P0087 (rail pressure too low) shows up with five different failure type bytes, which is the FTB doing real work.
23 documented codes across 114 real diagnostics.
Ranked by how often we actually see them
| Code | What it is | Diagnostics |
|---|---|---|
| P0087 | Fuel rail/system pressure too low | 20 |
| P0090 | Fuel pressure regulator 1 control circuit | 14 |
| P0193 | Fuel rail pressure sensor circuit high | 13 |
| P0001 | Fuel volume regulator control circuit open | 10 |
| P0089 | Fuel pressure regulator 1 performance | 5 |
| P008A | Low pressure fuel system pressure too low | 5 |
| P0252 | Injection pump fuel metering control A range/performance | 5 |
| P0190 | Fuel rail pressure sensor circuit | 5 |
| P0093 | Fuel system leak detected, large leak | 4 |
| P0002 | Fuel volume regulator control circuit range/performance | 4 |
| P02FA | Not individually documented | 4 |
| P0088 | Fuel rail/system pressure too high | 3 |
| P0003 | Fuel volume regulator control circuit low | 3 |
| P000A | A camshaft position slow response, bank 1 | 3 |
| P02ED | Not individually documented | 3 |
| P0095 | Intake air temperature sensor 2 circuit | 2 |
| P0148 | Fuel delivery error | 2 |
| P000B | B camshaft position slow response, bank 1 | 2 |
| P0191 | Fuel rail pressure sensor circuit range/performance | 2 |
| P0192 | Fuel rail pressure sensor circuit low | 2 |
| P0008 | Engine position system performance, bank 1 | 1 |
| P000F | Fuel system over-pressure relief valve activated | 1 |
| P0230 | Fuel pump primary circuit | 1 |
FAQ
Frequently asked questions
How do I run a diagnosis?
Select the vehicle on Start, click the Diagnostic card and choose New diagnostic. Fill in the description, the error codes and the mileage, then click Analyze.
Learn more: Diagnostic (vehicle-first start), Diagnostic form: description, error codes and mileage
Do I have to type the codes from my scan tool?
No. Click the camera button next to Error codes and take or choose a photo (JPEG or PNG) of the scan tool's screen; WrenchLane reads the codes and their descriptions into the form. You can also speak them with the microphone.
Learn more: OBD reader photo scan (fault codes from a photo), Voice input for the problem description
Are the public fault code pages built from my diagnostics?
They are built from anonymised, aggregated diagnostics run in WrenchLane; no workshop, customer or vehicle can be identified. Each fault code page shows how often the code was seen across those diagnostics and in how many separate workshops.
Learn more: Fault code pages on wrenchlane.com (fault-code cluster)
Work a fuel pressure and delivery fault on a real car
Enter the codes and the symptoms and get ranked probable causes for that specific vehicle, with the checks in the order worth doing them. Free account, no card.
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