Cause
Weak fuel pump
A pump holding correct pressure and unable to deliver volume. A tired pump passes a static pressure test all day, because pressure against a closed system says nothing about flow — so a fuel test that does not measure delivery under load has not tested anything.
Typically a moderate job.
Some of these codes mean you should stop driving
2 of the 14 codes this can cause indicate a fault where continuing to drive risks damage or is unsafe. Which one you have matters more than the cause does — read the code's own page before deciding.
Codes this can cause (14)
Codes where this is a likely explanation first, rather than merely a possible one.
- P008A Low Pressure Fuel System Pressure - Too Low Likely for this code High
- P062A Fuel Pump A Control Circuit Range/Performance Likely for this code High
- P2191 System Too Lean at Higher Load Bank 1 Likely for this code Moderate
- P2293 Fuel Pressure Regulator B Performance Likely for this code High
- P2540 Low Pressure Fuel System Sensor Circuit Range/Performance Likely for this code Stop driving High
- P2541 Low Pressure Fuel System Sensor Circuit Low Likely for this code High
- P2635 Fuel Pump A Low Flow or Performance Likely for this code Stop driving High
- P0313 Misfire Detected with Low Fuel Level Low
- P2177 System Too Lean Off Idle Bank 1 Moderate
- P2193 System Too Lean at Higher Load Bank 2 Moderate
- P2339 Cylinder 4 Above Knock/Combustion Vibration Sensor Threshold High
- P2539 Low Pressure Fuel System Sensor Circuit High
- P2543 Low Pressure Fuel System Sensor Circuit Intermittent High
- P2636 Fuel Pump B Low Flow or Performance High
Information, not instruction
CarGeek is a reference, not a service manual. Its pages are written from public sources and from what other people have found, never from a manufacturer's own service information, so they can be wrong or incomplete for your particular vehicle. Some of what they describe carries real risk: high voltage, fuel under pressure, stored energy, hot and moving parts.
Have anything you intend to act on checked by a trained person against the manufacturer's own procedure for your vehicle. Nothing here replaces that procedure.
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