P018B
8 owner reports and 416 manufacturer filings across 99 model years from Alfa Romeo, Buick, Cadillac, Chevrolet and others.
Where P018B shows up
Source: NHTSA manufacturer communications and complaintsShowing the 25 model years where P018B appears most; it is on file for 99 in total.
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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P018B by make
The same record, one make at a time: the model years, bulletins and owner reports that name P018B on that maker’s vehicles.
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
unit was towed in by westway around 0100AM CHEK UNIT CODES P2635 PINPINT TEST NEED FUEL PUMP 02-12-24 Stalls over and over again Cause- Performed a DTC scan and found codes (P2635) fuel pump flow performance and (P018B) fuel pressure…
First it was the Brake Controller Unit, Diesel Injector Connector (cylinder 7), P1050 DEF Level Sensor, U029E NOX Sensor Module 2 Communication Lost, U02A3 Lost Communication With Particulate Matter Sensor Module, and now P018B Code: Fuel…
416 manufacturer filings name P018B. 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 P018B.
- 18-077-25 Service bulletin2025-08-05 · Unknown Or Other
- Flash: Powertrain Control Module (PCM) Updates **Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs):** ● **U0104-00 - Lost Communication With Cruise Control Module. (NA Market Only) ● U0405-00 - Invalid Data Received From Cruise Control Module. (NA Market Only)** ● P018B - Fuel Pres
- 18-076-25 Service bulletin2025-08-05 · Unknown Or Other
- Flash: Powertrain Control Module (PCM) Updates **Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs):** ● **U0104-00 - Lost Communication With Cruise Control Module. (NA Market Only) ● U0405-00 - Invalid Data Received From Cruise Control Module. (NA Market Only)** ● P018B - Fuel Pres
- 18-071-24 REV. A Service bulletin2024-10-08 · Power Train
- "Flash: Powertrain Control Module (PCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P018B - Fuel Pressure Sensor ""B"" Circuit Range/performance. ● P2AF6 - Starter Relay 3 Stuck Off. ● P1CEA - Boost Side EVAP Purge System Performance. ● U0104 - Lost Communication W
- 18-072-24 Service bulletin2024-09-21 · Power Train
- "Flash: Powertrain Control Module (PCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P018B - Fuel Pressure Sensor ""B"" Circuit Range/performance. ● P2AF6 - Starter Relay 3 Stuck Off. ● P1CEA - Boost Side Evap Purge System Performance. ● U0104 - Lost Communication W
- 18-071-24 Service bulletin2024-09-21 · Power Train
- "Flash: Powertrain Control Module (PCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P018B - Fuel Pressure Sensor ""B"" Circuit Range/performance. ● P2AF6 - Starter Relay 3 Stuck Off. ● P1CEA - Boost Side EVAP Purge System Performance. ● U0104 - Lost Communication W
- 18-064-24 Service bulletin2024-07-25 · Power Train
- "Flash: Powertrain Control Module (PCM) Updates **Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set the following Diagnostic Trouble Code (DTC):** ● **P018B - Fuel Pressure Sensor ""B"" Circuit Range/Performance.** Customer may also experience one or more of the following: ● **Undesirable vehicle drivability behavior causing the a Shift to P
What P018B means
Source: SAE J2012 / OBD-IIP018B 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 P018B
Source: NHTSA files and the OBD-II standardCan I keep driving with P018B 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.