Reference meaning
What does this code mean?
The wording below belongs to the named make and communication. Match the complete code, reporting module, model year and engine before applying it.
A code identifies a detected condition, not a part that must automatically be replaced.
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A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
Before replacing a part
Record codes and freeze-frame data. Check battery condition, related codes and visible wiring or hose damage. Follow the vehicle's diagnostic procedure and test results before replacing parts.
Scan worksheet →Manufacturer wording
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
P1235High Pressure Fuel Pump Circuit
Manufacturer communications
8Original wording in English
MITSUBISHI
In cold weather, false MIL illumination may occur on some affected vehicles during turbocharger operation below 3,000 rpm engine speed, due to improper intake air volume judgement parameter. DTCs P1235 (2008-2010 vehicles) or P0068 (2011-2014 vehicles) - Boost/Air Flow Sensor Plausibility may be stored in the ECM. This TSB provi…
CHEVROLET, GMC
This Preliminary Information communication provides information to the technician about vehicles that have Misfire, rough running, surge, chuggle, and possible Service Engine Soon Malfunction Indicator Lamp on. Technician may find Diagnostic Trouble Codes P1223, P1226, P1229, P1232, P1235, P1238, P1241 or P1244. Technician shoul…
SCION
Some 2013 model year Scion FR-S vehicles may exhibit a MIL ?ON? condition with Diagnostic Trouble Code (DTC) P1235 (High Pressure Fuel Pump Circuit). The Engine Control Module/ECM (SAE term: Powertrain Control Module/PCM) logic has been revised to address this condition. Use the following repair procedure for ECM (PCM) reprogram…
SUBARU
REPROGRAMMING AVAILABILITY FOR DTC P1235 FALSE FAILURE INDICATION FOR HIGH-PRESSURE FUEL PUMP CIRCUIT
Check vehicle applicability
29A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Chevrolet | F SERIES ↗ | 2005 |
| Chevrolet | F SERIES ↗ | 2004 |
| Chevrolet | SILVERADO 1500 HD ↗ | 2005 |
| Chevrolet | SILVERADO 1500 HD ↗ | 2004 |
| Chevrolet | SILVERADO 2500 ↗ | 2005 |
| Chevrolet | SILVERADO 2500 ↗ | 2004 |
| Ford | EXPLORER ↗ | 2004 |
| Ford | FOCUS ↗ | 2001 |
Code meaning and manufacturer information
Original wording in English · Historical directory labels; manufacturer applicability has not been established for every entry.
Fuel Pump Control Out Of Range
Can I keep driving?
A code alone cannot establish whether driving is safe. A flashing malfunction light, severe shaking, overheating, oil-pressure warning or loss of braking or steering needs prompt attention. Stop in a safe place and seek assistance when control or engine safety is affected. Follow the vehicle handbook.