P2D2F on Jeep
Cold Start Turbocharger/Supercharger Underboost Condition (unconfirmed)
P2D2F on Jeep vehicles indicates cold start turbocharger/supercharger underboost condition (unconfirmed). Au7o has documented this code across 1 Jeep model — most commonly on Grand Cherokee. Manufacturer-specific code seen primarily on Stellantis/FCA diesel applications, most commonly the 3.0L EcoDiesel in Ram 1500. The consistent reading across owner and technician reports is that it is an underboost fault that sets during the cold-start or rapid warm-up phase, which is what distinguishes it from the generic P0299 underboost code that runs at operating temperature; the two often set together. However, the exact manufacturer wording could not be confirmed against FCA service information, so the name above should be treated as unverified. Expect reduced power and possibly limp mode.
Common Causes of P2D2F
- •Boost leak - loose or cracked charge-air hose, clamp, or intercooler tube O-ring
- •Cracked or leaking EGR cooler or EGR tube at the turbo (a known weak point on the 3.0L EcoDiesel)
- •Soot-contaminated MAP/boost pressure sensor giving a low reading
- •Sticking or failed variable-geometry turbo vanes or turbo actuator
- •Restricted air filter or intake, or a clogged DPF raising exhaust backpressure
P2D2F on Jeep by Model
Jeep Grand Cherokee(1 issue)
- 2014-2019 Grand Cherokee EcoDiesel EGR Cooler Fire-Risk Recall (W79 / 20V-699)2014-2019
Certain 2014-2019 Jeep Grand Cherokee vehicles with the 3.0L EcoDiesel engine are included in safety recall W79 / NHTSA 20V-699. NHTSA lists 28,884 potentially involved Jeep vehicles. Thermal fatigue can cause the EGR cooler to crack internally over time, allowing pre-heated vaporized coolant into the EGR system; under some conditions the mixture can combust inside the intake manifold and lead to a vehicle fire. Recall inclusion is VIN-specific. The prior card overstated the Jeep population as 34,334, attached unsupported generic EGR codes, and offered OEM, aftermarket, manifold, and gasket purchases even though the recall repair is free and inspection-dependent.
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View P2D2F across all makes →Frequently Asked Questions
What does P2D2F mean on Jeep?▼
P2D2F stands for "Cold Start Turbocharger/Supercharger Underboost Condition (unconfirmed)." Manufacturer-specific code seen primarily on Stellantis/FCA diesel applications, most commonly the 3.0L EcoDiesel in Ram 1500. The consistent reading across owner and technician reports is that it is an underboost fault that sets during the cold-start or rapid warm-up phase, which is what distinguishes it from the generic P0299 underboost code that runs at operating temperature; the two often set together. However, the exact manufacturer wording could not be confirmed against FCA service information, so the name above should be treated as unverified. Expect reduced power and possibly limp mode. On Jeep specifically, this code is documented across 1 model.
What causes P2D2F on Jeep vehicles?▼
Common causes on Jeep: Boost leak - loose or cracked charge-air hose, clamp, or intercooler tube O-ring, Cracked or leaking EGR cooler or EGR tube at the turbo (a known weak point on the 3.0L EcoDiesel), Soot-contaminated MAP/boost pressure sensor giving a low reading, Sticking or failed variable-geometry turbo vanes or turbo actuator, Restricted air filter or intake, or a clogged DPF raising exhaust backpressure. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P2D2F on a Jeep?▼
Repair costs vary widely depending on the root cause and specific Jeep model.
Which Jeep models have P2D2F documented?▼
Au7o has documented P2D2F on 1 Jeep model: Grand Cherokee.