P018C
2 owner reports and 6 manufacturer filings across 4 model years from Alfa Romeo, GMC, Jeep, Ram.
Where P018C shows up
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports | Parts |
|---|---|---|---|---|
| 2019 GMC Sierra | Electrical System | 5 | — | Battery → |
| 2019 Alfa Romeo Giulia | Fuel/Propulsion System | — | 1 | Fuel pump → |
| 2019 Jeep Cherokee | Engine | — | 1 | |
| 2019 Ram Promaster City | Fuel/Propulsion System | 1 | — | Fuel pump → |
A model year appears here because the code is named in its record, not because every one of these vehicles sets it. Counts are mentions in the federal files, not failure rates — nobody publishes the denominator.
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What it gets filed under
What owners said
Source: NHTSA complaint databaseOwners’ own words, one per nameplate, scrubbed of anything identifying. These are unverified reports filed with NHTSA — they are what was said, not a finding that it was true.
Car suddenly got p018c & p018b codes along with (setc) notification while on freeway and continuously would go in and out of limp mode when accelerating or breaking which nearly caused me to crash
Managed to get to an auto zone and the code was p018c fuel pressure sensor B circuit low
6 manufacturer filings name P018C. Start with what the maker wrote down.
A code names the test that failed, not the part. A bulletin that names it is often a diagnosis someone has already written down — quote its number at the service desk.
Manufacturer filings that name it
Source: NHTSA manufacturer communicationsService bulletins and campaigns whose filed summary names P018C.
- PIT5677B Service bulletin2019-09-27 · Engine And Engine Cooling
- This Preliminary information communicates the following issues and directs dealership to inspect the engine harness for shorting. Some customers may comment on any of the following concerns: - SES MIL - No Start - No Crank - Engine runs rough - Reduced engine power - Erratic speedo - Blown Fuse(s): F46UA, F47UA, F51UA, F78UA, F85UA, F86UA, F87UA, and/or F90UA When checking for DTC's
- PIT5677A Service bulletin2019-08-26 · Electrical System
- This Preliminary information communicates the following issues and directs dealership to inspect the engine harness for shorting. Some customers may comment on any of the following concerns: - SES MIL - No Start - No Crank - Engine runs rough - Reduced engine power - Erratic speedo - Blown Fuse(s): F46UA, F47UA, F51UA, F78UA, F85UA, F86UA, F87UA, and/or F90UA When checking for DTC's
- 14-001-19 Service bulletin2019-05-29 · Fuel System, Gasoline
- P018C - Fuel Pressure Sensor Circuit Low This bulletin involves replacing the fuel pressure sensor due to a P018C Diagnostic Trouble Code (DTC). Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that the following Diagnostic Trouble Code (DTC) has been set:P018C - Fuel Pressure Sensor Circuit Low.
- PIT5677 Service bulletin2019-04-29 · Electrical System
- This Preliminary information communicates the following issues and directs dealership to inspect the engine harness for shorting. Some customers may comment on any of the following concerns: - SES MIL - No Start - No Crank - Engine runs rough - Reduced engine power - Erratic speedo When checking for DTC's any combination may be found: P001A P2B00 P2B01 P2B03 P2B96 P001B P003D P0107 P
What P018C means
Source: SAE J2012 / OBD-IIP018C sits in the generic range of the OBD-II standard, so it means the same thing on every vehicle sold in the United States — but WhichTrim does not carry a definition for it and will not invent one. What is on this page is the record: who named it and on what.
A stored code names the test that failed, never the part that caused it. It is the starting point of a diagnosis, not its conclusion — the same code has several possible causes and the cheap one is not always right.
Common questions about P018C
Source: NHTSA files and the OBD-II standardCan I keep driving with P018C stored?
Nobody can answer that from the code alone, and a site that does is guessing. A steady light means a fault was logged and the car should be checked soon; a flashing light means a severe misfire — slow down and get it seen as soon as possible, because severe misfire can quickly damage the catalytic converter. The safe read of this page is the mileage and the components, not permission.
Does a code mean the car is recalled?
No. Recalls are filed by campaign and matched by VIN, and none of them are triggered by a scan tool. If you want to know whether an open recall applies to one specific vehicle, check the VIN at nhtsa.gov/recalls — that is the only source that settles it.
Why do the counts here differ from other sites?
Because these are not estimates. Every number on this page is a count of documents in NHTSA's own files: manufacturer communications that name the code in their filed summary, and owner complaints that name it in the narrative. We do not model, weight or extrapolate them.
Will clearing the code fix it?
Clearing turns the light off and erases the freeze-frame data a technician would have used to work out what happened. If the condition is still there the code returns, usually within a few drive cycles, and the diagnosis now starts from less information than before.