P0628 on Chevrolet
Fuel Pump "A" Control Circuit Low
P0628 on Chevrolet vehicles indicates fuel pump "a" control circuit low. Au7o has documented this code across 1 Chevrolet model — most commonly on Silverado. The control module detected a low-voltage (short-to-ground) condition in the fuel pump 'A' control circuit. Signal voltage is below the expected range. Typical repair costs on Chevrolet range from $250 to $600, depending on the specific model and root cause.
Common Causes of P0628
- •Short to ground in the fuel pump control circuit
- •Faulty fuel pump relay (shorted)
- •Damaged/corroded wiring
- •Poor ground
- •Internal PCM fault
P0628 on Chevrolet by Model
Chevrolet Silverado(1 issue)
- Fuel Pump Control Module (FPCM/FSCM) Corrosion — Crank, No-Start2007-2013
GMT900 Silverados (and the late GMT800) mount the fuel pump control module / fuel-system control module on an exposed frame-rail bracket where it is constantly hit with road salt, water and debris. The module's connector and internals corrode, and the FPCM then fails to drive the in-tank pump — producing extended cranking, intermittent stalling, and ultimately a crank-but-no-start with no fuel pressure. Because the pump itself is often fine, owners frequently mis-diagnose and replace the in-tank pump first. A common, well-documented salt-belt failure with steady search demand.
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View P0628 across all makes →Frequently Asked Questions
What does P0628 mean on Chevrolet?▼
P0628 stands for "Fuel Pump "A" Control Circuit Low." The control module detected a low-voltage (short-to-ground) condition in the fuel pump 'A' control circuit. Signal voltage is below the expected range. On Chevrolet specifically, this code is documented across 1 model.
What causes P0628 on Chevrolet vehicles?▼
Common causes on Chevrolet: Short to ground in the fuel pump control circuit, Faulty fuel pump relay (shorted), Damaged/corroded wiring, Poor ground, Internal PCM fault. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0628 on a Chevrolet?▼
Repair costs on Chevrolet range from $250 to $600, depending on the specific model and root cause.
Which Chevrolet models have P0628 documented?▼
Au7o has documented P0628 on 1 Chevrolet model: Silverado.