P2457 on Lincoln
Exhaust Gas Recirculation Cooling System Performance
P2457 on Lincoln vehicles indicates exhaust gas recirculation cooling system performance. Au7o has documented this code across 1 Lincoln model — most commonly on Nautilus. Generic code set when the PCM determines the EGR cooler/cooling system is not lowering recirculated exhaust gas temperature as much as expected — the cooler is underperforming, often due to clogging, coolant flow loss, or a stuck bypass. Typical repair costs on Lincoln range from $600 to $9,000, depending on the specific model and root cause.
Common Causes of P2457
- •Carbon-clogged/restricted EGR cooler
- •Loss of coolant flow through the cooler
- •Stuck EGR cooler bypass valve
- •Faulty temperature sensors used for the monitor
P2457 on Lincoln by Model
Lincoln Nautilus(1 issue)
- 2.0L EcoBoost coolant loss / EGR cooler leak — low coolant, white smoke, overheat2019-2020
2019-2020 Nautilus models with the base 2.0L EcoBoost (non-hybrid) suffer unexplained coolant loss, white tailpipe smoke, an overheat warning, and sometimes coolant intrusion into the cylinders. Ford TSB 20-2234 traces the most common cause to a failing exhaust gas recirculation (EGR) cooler that leaks coolant internally; the related design also has a known coolant-intrusion weakness (narrow coolant slit between cylinders compromising the head-gasket seal). Owners report repeated coolant top-offs with no visible external leak, then misfires as coolant fouls the plugs. A June 2025 Ford EcoBoost coolant-intrusion class action covers 1.5L-2.0L engines; the most severe Nautilus cases require engine replacement with the redesigned block.
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View P2457 across all makes →Frequently Asked Questions
What does P2457 mean on Lincoln?▼
P2457 stands for "Exhaust Gas Recirculation Cooling System Performance." Generic code set when the PCM determines the EGR cooler/cooling system is not lowering recirculated exhaust gas temperature as much as expected — the cooler is underperforming, often due to clogging, coolant flow loss, or a stuck bypass. On Lincoln specifically, this code is documented across 1 model.
What causes P2457 on Lincoln vehicles?▼
Common causes on Lincoln: Carbon-clogged/restricted EGR cooler, Loss of coolant flow through the cooler, Stuck EGR cooler bypass valve, Faulty temperature sensors used for the monitor. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P2457 on a Lincoln?▼
Repair costs on Lincoln range from $600 to $9,000, depending on the specific model and root cause.
Which Lincoln models have P2457 documented?▼
Au7o has documented P2457 on 1 Lincoln model: Nautilus.