P0230 on Chevrolet
Fuel Pump Primary Circuit Malfunction
P0230 on Chevrolet vehicles indicates fuel pump primary circuit malfunction. Au7o has documented this code across 7 Chevrolet models — most commonly on C/K 1500, C/K 2500, Cobalt. P0230 means the engine computer detected a fault in the fuel pump primary circuit — the control side that switches the fuel pump (or its relay) on and off. The PCM energizes this circuit to run the electric fuel pump that delivers fuel to the engine; if it sees voltage that is too high, too low, or out of expected range, it sets this code. Because the pump may not run correctly, the engine can crank without starting, stall, lose power, or hesitate. This is a circuit/control fault rather than a direct measurement of fuel pressure. Typical repair costs on Chevrolet range from $300 to $1,000, depending on the specific model and root cause.
Common Causes of P0230
- •Faulty fuel pump relay
- •Damaged wiring or connectors in the fuel pump control circuit
- •Corroded or loose ground/power connection
- •Failed fuel pump or fuel pump driver module
- •Blown fuse or fusible link
- •Open or short in the primary control wiring
- •Faulty PCM driver output (rare)
P0230 on Chevrolet by Model
Chevrolet C/K 1500(1 issue)
- In-Tank Fuel Pump Failure1990-1998
The in-tank electric fuel pump fails frequently on C/K trucks, especially in hot weather. Low fuel levels accelerate pump failure as the fuel cools and lubricates the pump. The pump module sender unit also fails, causing inaccurate fuel gauge readings.
Chevrolet C/K 2500(1 issue)
- In-Tank Fuel Pump Failure1990-2000
Same fuel pump failure issue as the C/K 1500. The dual-tank equipped models have an additional failure point with the tank selector valve which can cause fuel starvation.
Chevrolet Cobalt(1 issue)
- Fuel Pump Module Failure Causing Stalling and No-Start2005-2010
The in-tank fuel pump assembly is prone to failure, often due to deteriorating fuel pump wiring harness connections or internal pump motor wear. Symptoms appear gradually with intermittent stalling before complete failure. Hot weather exacerbates the problem as heat-soaked pumps lose pressure.
Chevrolet Equinox(1 issue)
- Fuel Pump Module Failure Causing Engine Stall2021-2022
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 affecting 23,164 vehicles.
Chevrolet Express(1 issue)
- Fuel Pump Module Failure2003-2022
In-tank fuel pump fails causing stalling, hard starts, and no-start conditions. Often fails without warning on high-mileage vans.
Chevrolet S-10(1 issue)
- In-Tank Fuel Pump Failure1994-2004
The 1994-2004 S-10 in-tank fuel pump is prone to premature failure. Running the tank below 1/4 accelerates pump death because fuel cools and lubricates the pump. The integrated fuel level sender also fails, causing erratic gauge readings. Hot restart problems are a classic early warning sign as heat exacerbates pump weakness.
Chevrolet Silverado 1500(1 issue)
- Fuel Pump Module Failure2019-2022
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. The fuel tank assembly design may contribute to pump failures.
Looking for P0230 on a different make?
View P0230 across all makes →Frequently Asked Questions
What does P0230 mean on Chevrolet?▼
P0230 stands for "Fuel Pump Primary Circuit Malfunction." P0230 means the engine computer detected a fault in the fuel pump primary circuit — the control side that switches the fuel pump (or its relay) on and off. The PCM energizes this circuit to run the electric fuel pump that delivers fuel to the engine; if it sees voltage that is too high, too low, or out of expected range, it sets this code. Because the pump may not run correctly, the engine can crank without starting, stall, lose power, or hesitate. This is a circuit/control fault rather than a direct measurement of fuel pressure. On Chevrolet specifically, this code is documented across 7 models.
What causes P0230 on Chevrolet vehicles?▼
Common causes on Chevrolet: Faulty fuel pump relay, Damaged wiring or connectors in the fuel pump control circuit, Corroded or loose ground/power connection, Failed fuel pump or fuel pump driver module, Blown fuse or fusible link. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0230 on a Chevrolet?▼
Repair costs on Chevrolet range from $300 to $1,000, depending on the specific model and root cause.
Which Chevrolet models have P0230 documented?▼
Au7o has documented P0230 on 7 Chevrolet models: C/K 1500, C/K 2500, Cobalt, Equinox, Express, S-10, Silverado 1500.