P0231: Fuel Pump Secondary Circuit - Low
49 vehicles · 14 makes · $50-$2,000 repair
Most Reported On
P0231 is an OBD-II diagnostic trouble code meaning “Fuel Pump Secondary Circuit - Low.” This code indicates the engine computer detected a low-voltage condition in the fuel pump's secondary (driver/output) control circuit. Many vehicles control the fuel pump through a relay or a dedicated driver module, and the computer monitors the voltage on that circuit to confirm the pump is being powered correctly. When the feedback voltage stays lower than expected, P0231 sets. Because the fuel pump supplies pressurized fuel to the injectors, this fault can cause hard starting, stalling, or no-start conditions. This code is most commonly reported on 2018-2021 Honda Accord, 2018-2022 Honda CR-V, and 2011-2016 Chrysler 300, plus 46 other vehicles, with repair costs ranging from $50 to $2,000.
Common Causes
Typical Repair Cost
Based on 51 documented vehicle-specific issues. Actual cost depends on root cause and vehicle.
Diagnostic Tools
To diagnose P0231, you'll need an OBD-II scanner. Here are our recommendations at every price point.
ANCEL AD310 Classic OBD-II Scanner
by ANCEL
A simple, affordable code reader that reads and clears check engine codes. Great for quick diagnostics on any OBD-II vehicle (1996+).
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BlueDriver Pro Bluetooth Scanner
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Bluetooth OBD-II scanner with a free companion app. Provides enhanced diagnostics, smog readiness, and repair reports sourced from a database of verified fixes.
- Enhanced diagnostics (ABS, SRS, transmission)
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LAUNCH CRP123X OBD-II Scanner
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A professional-grade handheld scanner that reads all four major systems (engine, transmission, ABS, SRS) with live data streaming and graphing.
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Autel MaxiCOM MK808S Diagnostic Tool
by Autel
Shop-level diagnostic tablet with bi-directional control, active tests, and full system coverage. Ideal for serious DIYers and small shops.
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- Oil reset, EPB, BMS, TPMS, injector coding
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Vehicles Affected (49)
Fuel Pump Module Failure
Fuel Pump Module Failure Causing Engine Stall
In-Tank Fuel Pump Failure
In-Tank Fuel Pump Failure
In-Tank Fuel Pump Failure
TIPM Electrical Failures
Fuel Pump Relay Failure (TIPM-Related)
TIPM (Totally Integrated Power Module) Failure
TIPM (Totally Integrated Power Module) Failure
TIPM Electrical Module Failure
TIPM (Totally Integrated Power Module) Issues
TIPM Electrical System Failure
TIPM (Totally Integrated Power Module) Failure
Fuel Pump/Relay Failure (TIPM-Related)
TIPM Electrical Module Failure
TIPM Stalling and No-Start
TIPM (Totally Integrated Power Module) Failure — Random No-Start, Fuel-Pump No-Prime, Stalling & Battery Drain
Fuel Pump Module Failure and Hard Start / Stalling
In-Tank Fuel Pump Premature Failure
Fuel Pump Module Failure Causing No-Start or Stalling
Fuel Pump Failure in Large Tank
Fuel Pump Module Failure Leading to No-Start or Intermittent Stalling
In-Tank Fuel Pump Failure
In-Tank Fuel Pump Failure
Denso Fuel Pump Impeller Failure - Safety Recall NHTSA 20V-374
Denso Fuel Pump Recall - NHTSA 20V-374 and 23V-111
Fuel Pump Impeller Failure Causing Stalling
Fuel Pump Impeller Failure Causing Stalling and No-Start
Fuel Pump Failure Recall (NHTSA 23V-858)
Fuel Pump Failure
Fuel Pump Failure (NHTSA Recall)
Fuel Pump Failure (Multiple Recalls - NHTSA 21V-215, 23V-858)
TIPM (Fuse Box) Failure
TIPM (Totally Integrated Power Module) Failure
TIPM Fuel Pump Relay Failure
Engine Stalling / Loss of Power While Driving
Sudden Power Loss / Engine Stalling While Driving
FAQ
What does P0231 mean?
P0231 stands for "Fuel Pump Secondary Circuit - Low." This code indicates the engine computer detected a low-voltage condition in the fuel pump's secondary (driver/output) control circuit. Many vehicles control the fuel pump through a relay or a dedicated driver module, and the computer monitors the voltage on that circuit to confirm the pump is being powered correctly. When the feedback voltage stays lower than expected, P0231 sets. Because the fuel pump supplies pressurized fuel to the injectors, this fault can cause hard starting, stalling, or no-start conditions.
What are the most common causes of P0231?
The most common causes of P0231 are: Faulty fuel pump relay, Corroded or loose connector at the pump or relay, Damaged or shorted wiring in the pump power circuit, Poor ground for the fuel pump circuit, Failing fuel pump drawing abnormal current, Faulty fuel pump driver module, PCM/ECM internal driver fault (rare). The specific cause varies by vehicle.
How much does it cost to fix P0231?
Repair costs for P0231 range from $50 to $2,000, depending on the vehicle and root cause.
Which vehicles are affected by P0231?
Au7o has documented P0231 across 49 vehicle models from 14 manufacturers: Chevrolet, Chrysler, Dodge, Ford, GMC, Genesis, Honda, Jeep, Mazda, Nissan, RAM, Subaru, Toyota, Volvo.
Sources (12)
- NHTSANHTSA Recall 20V-314: Fuel Pump May Fail
- manufacturerHonda Safety Recall: 2018-2020 Honda Fuel Pump Motor Recall Expansion
- NHTSANHTSA Recall 23V-858: Fuel Pump Failure Can Cause Engine Stall
- videoYouTube - Chrysler 300 TIPM Repair and Diagnosis by EricTheCarGuy
- manufacturerMazda Safety Recall 5321K / NHTSA 21V-875: Low-Pressure Fuel Pump May Fail
- NHTSANHTSA Recall 20V-314: Fuel Pump May Fail
- NHTSANHTSA Recall 23V-111: Fuel Pump Failure May Cause Engine Stall
- ForumRamForumz: TIPM Fuel Pump Failure, Repair, & Subsequent Problems
- ForumRamForum: Fuel pump or relay (TIPM) problem how to tell?
- ForumRamForum: RAM TIPM FUEL PUMP RELAY
- manufacturerVertical Visions: TIPM Fuel Pump Relay Solutions
- manufacturerMAKS TIPM Rebuilders: Fuel pump relay issues in the TIPM for MOPAR
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.