P0231 on Jeep
Fuel Pump Secondary Circuit - Low
P0231 on Jeep vehicles indicates fuel pump secondary circuit - low. Au7o has documented this code across 5 Jeep models — most commonly on Cherokee, Commander, Grand Cherokee. 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. Typical repair costs on Jeep range from $75 to $2,000, depending on the specific model and root cause.
Common Causes of P0231
- •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)
P0231 on Jeep by Model
Jeep Cherokee(1 issue)
- TIPM Fuel Pump Relay Failure2014-2023
The Totally Integrated Power Module fuel pump relay fails, causing no-start conditions or fuel pump running continuously. Unlike older models, the relay is integrated and cannot be replaced separately.
Jeep Commander(1 issue)
- Engine Stalling / Loss of Power While Driving2006-2010
The Commander can stall or lose engine power without warning at any speed. The problem is linked to multiple causes: faulty crankshaft position sensor, failing fuel pump, PCM software bugs, and throttle body issues. Over 173 engine complaints were filed for the 2006 model year. Some owners report engine compartment fires linked to electrical shorts in the PCM area.
Jeep Grand Cherokee(1 issue)
- TIPM (Fuse Box) Failure2011-2017
The Totally Integrated Power Module (TIPM) can fail, causing various electrical issues including fuel pump relay problems (no start), random horn honking, and erratic behavior of lights and accessories.
Jeep Renegade(1 issue)
- Sudden Power Loss / Engine Stalling While Driving2015-2019
Owners report sudden and complete loss of power while driving at highway speeds without warning. The engine may stall, lose throttle response, or go into limp mode unexpectedly. Contributing factors include throttle body failure, fuel pump issues, and PCM software bugs. This is especially dangerous on highways as power steering and power brakes are compromised when the engine stalls.
Jeep Wrangler(1 issue)
- TIPM (Totally Integrated Power Module) Failure2007-2016
The TIPM can develop internal relay failures causing various electrical problems including fuel pump not activating, horn honking randomly, wipers activating on their own, and other erratic electrical behavior. This is a well-known issue across Chrysler vehicles.
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View P0231 across all makes →Frequently Asked Questions
What does P0231 mean on Jeep?▼
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. On Jeep specifically, this code is documented across 5 models.
What causes P0231 on Jeep vehicles?▼
Common causes on Jeep: 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. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0231 on a Jeep?▼
Repair costs on Jeep range from $75 to $2,000, depending on the specific model and root cause.
Which Jeep models have P0231 documented?▼
Au7o has documented P0231 on 5 Jeep models: Cherokee, Commander, Grand Cherokee, Renegade, Wrangler.