P1238 on Volvo
Manufacturer-Specific Fuel/Injector System Fault
P1238 on Volvo vehicles indicates manufacturer-specific fuel/injector system fault. Au7o has documented this code across 1 Volvo model — most commonly on V70. P1238 is a manufacturer-specific powertrain code whose definition varies by maker, so it should be confirmed against model-specific data. Reported meanings include a fuel pump circuit/relay fault (Ford), a mechanical injector failure on some Toyota diesels, and a cylinder 2 injector circuit (open) fault on some Volkswagen/Audi applications. In general it points to a fuel-delivery or fuel-injector problem that can cause hard starting, stalling, misfire, and reduced power. Typical repair costs on Volvo range from $350 to $900, depending on the specific model and root cause.
Common Causes of P1238
- •Fuel pump circuit, relay, or driver fault (Ford)
- •Faulty or open fuel injector / injector circuit (cylinder-specific, VW)
- •Wiring, connector, or ground problems in the fuel circuit
- •Mechanical injector failure (some Toyota diesels)
- •Fuel pump or fuel delivery weakness
- •Faulty PCM/ECM driver
- •Corroded or loose electrical connections
P1238 on Volvo by Model
Volvo V70(1 issue)
- Fuel Pump Control Module Corrosion or Failure Causing No-Start and Stalling2008-2010
The fuel pump electronic control module used on this generation can fail from heat, moisture, or internal electronics faults, leading to intermittent no-starts, sudden stalling, or extended cranking. This problem is documented across late-2000s/early-2010s P3 Volvos and appears in owner reports and service literature. Because the module controls pump speed and delivery, failure can mimic a bad in-tank fuel pump.
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View P1238 across all makes →Frequently Asked Questions
What does P1238 mean on Volvo?▼
P1238 stands for "Manufacturer-Specific Fuel/Injector System Fault." P1238 is a manufacturer-specific powertrain code whose definition varies by maker, so it should be confirmed against model-specific data. Reported meanings include a fuel pump circuit/relay fault (Ford), a mechanical injector failure on some Toyota diesels, and a cylinder 2 injector circuit (open) fault on some Volkswagen/Audi applications. In general it points to a fuel-delivery or fuel-injector problem that can cause hard starting, stalling, misfire, and reduced power. On Volvo specifically, this code is documented across 1 model.
What causes P1238 on Volvo vehicles?▼
Common causes on Volvo: Fuel pump circuit, relay, or driver fault (Ford), Faulty or open fuel injector / injector circuit (cylinder-specific, VW), Wiring, connector, or ground problems in the fuel circuit, Mechanical injector failure (some Toyota diesels), Fuel pump or fuel delivery weakness. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P1238 on a Volvo?▼
Repair costs on Volvo range from $350 to $900, depending on the specific model and root cause.
Which Volvo models have P1238 documented?▼
Au7o has documented P1238 on 1 Volvo model: V70.