P00C6 on Chevrolet: How to Diagnose & Fix
Fuel Rail Pressure Too Low - Engine Cranking
1 Chevrolet model · 1 documented issue · 1 critical · $1,000-$1,200 repair
P00C6 on Chevrolet by model: symptoms, diagnosis and fix
Owners of 2023-2024 Equinox models with the 1.5L turbo (LSD) report the engine-mounted high-pressure direct-injection fuel pump failing, often well under 60,000 miles (some as early as 28,000 miles). The pump can no longer maintain rail pressure, so the engine suddenly loses power, drops into 'Engine Power Reduced' limp mode (speed limited to roughly 5-55 mph), stalls, or won't restart, frequently leaving the vehicle undrivable and requiring a tow. CarComplaints logged 20 distinct 2023 fuel/propulsion complaints centered on this part, and many owners report the replacement pump being on national back-order for months. This is a separate failure from the earlier 2021-2022 in-tank low-pressure fuel pump module recall.
Common Symptoms
- Sudden loss of power / stalling while driving
- Engine Power Reduced / limp mode (speed capped 5-55 mph)
- Check engine light
- Hesitation and loss of acceleration
- No-start or vehicle must be towed
How to Fix
Dealer diagnoses low fuel-rail pressure and replaces the high-pressure fuel pump (and gaskets); some cases also require fuel injectors or rail cleaning. Out of warranty, repairs have run roughly $1,000-$1,100. Owners should check for any GM warranty extension or special coverage and verify it is the high-pressure pump (not the in-tank module) before paying out of pocket.
Sources for this issue (2)
P00C6 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 P00C6 mean on a Chevrolet?
P00C6 stands for "Fuel Rail Pressure Too Low - Engine Cranking." On direct-injection engines the PCM monitors high-pressure fuel-rail pressure during cranking. This code sets when the rail fails to reach the pressure required to start the engine, which usually results in extended cranking, hard starting, or a no-start. On Chevrolet it is documented across 1 model: Equinox.
What are the most common causes of P00C6?
The most common causes of P00C6 are: Weak or failing low-pressure (lift) fuel pump, Failing high-pressure fuel pump, Leaking or stuck fuel injector, Clogged fuel filter or restricted supply, Faulty fuel rail pressure sensor, Very low fuel level. The specific cause varies by vehicle.
How much does it cost to fix P00C6 on a Chevrolet?
Published repair estimates on Chevrolet range from $1,000 to $1,200 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.
Looking for P00C6 on a different make?
View P00C6 across all makes →Join 600+ people using Au7o to better understand their vehicles.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.