P0090 on Chevrolet
Fuel Pressure Regulator 1 Control Circuit
P0090 on Chevrolet vehicles indicates fuel pressure regulator 1 control circuit. Au7o has documented this code across 1 Chevrolet model — most commonly on Traverse. The PCM detects a general fault in the control circuit for fuel pressure regulator 1 (the electrically controlled regulator/valve that sets rail pressure). Typical repair costs on Chevrolet range from $600 to $1,400, depending on the specific model and root cause.
Common Causes of P0090
- •Failed fuel pressure regulator/control valve
- •Open/shorted wiring or connector
- •Corroded connector
- •PCM driver fault
P0090 on Chevrolet by Model
Chevrolet Traverse(1 issue)
- Camshaft-Driven High-Pressure Fuel Pump Failure (Direct-Injection 3.6L) — Long Crank, No-Start, Low Rail Pressure2009-2023
Every direct-injected 3.6L V6 in the Traverse runs a cam-driven high-pressure fuel pump mounted in the valley that steps rail pressure up past 2,000 PSI. The pump's internal plunger seal and check valve wear, and the follower/cam lobe interface can wear as well, so rail pressure falls below the commanded value. Owners see progressively longer crank times, then a hot-restart no-start, then a hard stumble and reduced power under load. A failing pump can also dilute the engine oil with fuel, which accelerates every other wear item on an engine already known for timing chain and phaser trouble. Traverse Forum carries multi-page HPFP replacement threads across the LLT, LFX and LFY.
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View P0090 across all makes →Frequently Asked Questions
What does P0090 mean on Chevrolet?▼
P0090 stands for "Fuel Pressure Regulator 1 Control Circuit." The PCM detects a general fault in the control circuit for fuel pressure regulator 1 (the electrically controlled regulator/valve that sets rail pressure). On Chevrolet specifically, this code is documented across 1 model.
What causes P0090 on Chevrolet vehicles?▼
Common causes on Chevrolet: Failed fuel pressure regulator/control valve, Open/shorted wiring or connector, Corroded connector, PCM driver fault. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0090 on a Chevrolet?▼
Repair costs on Chevrolet range from $600 to $1,400, depending on the specific model and root cause.
Which Chevrolet models have P0090 documented?▼
Au7o has documented P0090 on 1 Chevrolet model: Traverse.