P008A on Mercedes-Benz
Low Pressure Fuel System Pressure - Too Low
P008A on Mercedes-Benz vehicles indicates low pressure fuel system pressure - too low. Au7o has documented this code across 1 Mercedes-Benz model — most commonly on GLC. Generic OBD-II code, most often seen on direct-injection and diesel vehicles that use both a low-pressure lift pump and a high-pressure pump. The PCM compares the commanded low-side fuel pressure to what the low-pressure fuel sensor reports and sets this code when actual pressure (or fuel volume/flow) falls below the expected value. Because the high-pressure pump is starved, the engine can run lean, misfire, hesitate under load, crank a long time, stall, or go into reduced-power mode. This one should not be ignored - sustained low supply pressure can damage the high-pressure pump. Note that some manufacturers define this code slightly differently.
Common Causes of P008A
- •Weak or failing in-tank fuel pump / lift pump
- •Clogged fuel filter or restricted fuel line
- •Faulty low-pressure fuel or fuel rail pressure sensor giving a false low reading
- •Leaking fuel line, injector, or pressure regulator on the low-pressure side
- •Low fuel level or contaminated/wrong fuel
- •Fuel pump control module or wiring/relay fault
P008A on Mercedes-Benz by Model
Mercedes-Benz GLC(1 issue)
- Fuel Pump Shutdown Causing Loss of Drive Power (Recall)2021-2023
Recall 23V445 directly covers 43,257 model-year 2021-2023 GLC 300 vehicles with fuel-pump impellers that may not meet material specifications. An affected impeller may deform, contact the pump housing and create mechanical resistance; in some instances the fuel pump can shut down and the vehicle can lose propulsion, increasing crash risk. A warning message or rough running may occur before shutdown. The 43,257-vehicle population is not an owner-report count.
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View P008A across all makes →Frequently Asked Questions
What does P008A mean on Mercedes-Benz?▼
P008A stands for "Low Pressure Fuel System Pressure - Too Low." Generic OBD-II code, most often seen on direct-injection and diesel vehicles that use both a low-pressure lift pump and a high-pressure pump. The PCM compares the commanded low-side fuel pressure to what the low-pressure fuel sensor reports and sets this code when actual pressure (or fuel volume/flow) falls below the expected value. Because the high-pressure pump is starved, the engine can run lean, misfire, hesitate under load, crank a long time, stall, or go into reduced-power mode. This one should not be ignored - sustained low supply pressure can damage the high-pressure pump. Note that some manufacturers define this code slightly differently. On Mercedes-Benz specifically, this code is documented across 1 model.
What causes P008A on Mercedes-Benz vehicles?▼
Common causes on Mercedes-Benz: Weak or failing in-tank fuel pump / lift pump, Clogged fuel filter or restricted fuel line, Faulty low-pressure fuel or fuel rail pressure sensor giving a false low reading, Leaking fuel line, injector, or pressure regulator on the low-pressure side, Low fuel level or contaminated/wrong fuel. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P008A on a Mercedes-Benz?▼
Repair costs vary widely depending on the root cause and specific Mercedes-Benz model.
Which Mercedes-Benz models have P008A documented?▼
Au7o has documented P008A on 1 Mercedes-Benz model: GLC.