P0232 on Chevrolet: How to Diagnose & Fix
Fuel Pump Secondary Circuit - High
2 Chevrolet models · 2 documented issues · 2 critical · $400-$1,000 repair
P0232 on Chevrolet by model: symptoms, diagnosis and fix
The fuel pump module can fail, causing hard starting, stalling, or no-start conditions. GM issued a recall for certain vehicles due to fuel pump issues. GM bulletin 24-NA-139 attributes crank/no-start, stalling and loss of power with DTC P023F/P129F to an internal short in the fuel pump driver control module.
Common Symptoms
- Engine stalls while driving
- Long crank time
- No start condition
- Loss of power
- Check engine light
How to Fix
Check if vehicle is covered by GM recall. Replace fuel pump module; with DTC P023F/P129F, GM bulletin 24-NA-139 calls for replacing the fuel pump driver control module (covered 8 years/80,000 miles). Some owners install upgraded pump assembly. Monitor for fuel pressure issues with scan tool.
Sources for this issue (2)
The fuel pump module fails to consistently provide adequate fuel flow to the engine, causing potential stalling while driving. This creates a significant safety hazard as the engine can stall unexpectedly in traffic. GM issued recall N222372310 (NHTSA 23V-013), covering 23,323 2021-2022 Equinox and 2022 Terrain vehicles.
Common Symptoms
- Engine stalling while driving
- Hesitation during acceleration
- Hard starting or extended cranking
- Reduced engine power
- Check engine light
How to Fix
Fuel pump module replacement under recall N222372310. Contact dealer for recall service. Check VIN at my.gm.com/recalls for eligibility.
Call to confirm they can assess your vehicle and perform the stated work. Search results do not confirm qualification, eligibility or coverage.
Sources for this issue (1)
P0232 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does P0232 mean on a Chevrolet?
P0232 stands for "Fuel Pump Secondary Circuit - High." This code means the engine computer has detected a high voltage signal in the fuel pump secondary (control) circuit, indicating the circuit that drives or monitors the fuel pump relay is reading higher than it should. The computer controls fuel pump power delivery through a relay and/or driver module, and a high reading suggests a short to voltage, a stuck relay, or a wiring fault in that control circuit. Depending on the fault, it can cause hard starting, stalling, or a no-start because fuel delivery is disrupted. The problem is typically electrical, in the relay, driver, or wiring, rather than the pump motor itself. On Chevrolet it is documented across 2 models: Silverado 1500, Equinox.
What are the most common causes of P0232?
The most common causes of P0232 are: Faulty fuel pump relay (stuck or shorted), Short to voltage in the fuel pump control wiring, Failed fuel pump driver module, Corroded or damaged connectors in the circuit, Faulty fuel pump (internal short), Wiring chafed against the body or harness short, Faulty PCM/ECM (rare). The specific cause varies by vehicle.
How much does it cost to fix P0232 on a Chevrolet?
Published repair estimates on Chevrolet range from $400 to $1,000 depending on the model and root cause. If an issue mentions a recall or campaign, check your VIN with the manufacturer or NHTSA and confirm eligibility and coverage with a dealer.
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Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.