6.4L Power Stroke Diagnostics (2008–2010)

Ford Super Duty, 2008-2010 — the first common-rail Power Stroke: piezo injectors, twin sequential (compound) fixed-geometry turbos, EGR with a cooler, and the first Power Stroke DPF. No SCR/DEF. Fuel-leak, compound-turbo, EGR, DPF-regen and FICM codes.

• P0087 — Fuel Rail/System Pressure Too Low (6.4 Power Stroke) Measured fuel rail pressure is below the PCM's commanded value.
• P0088 — Fuel Rail/System Pressure Too High (6.4 Power Stroke) Measured fuel rail pressure exceeds the commanded value on the 6.4L Power Stroke common-rail system.
• P0093 — Fuel System Leak Detected - Large Leak (6.4 Power Stroke) Diagnostic reference for 6.4L Power Stroke (2008–2010).
• P0094 — Fuel System Leak Detected - Small Leak (6.4 Power Stroke) Diagnostic reference for 6.4L Power Stroke (2008–2010) common-rail system.
• P0128 — Coolant Thermostat Below Regulating Temperature (6.4 Power Stroke) Engine coolant does not reach the expected operating temperature in the expected time.
• P0201 — Injector Circuit/Open - Cylinder 1 (6.4 Power Stroke) Diagnostic reference for 6.4L Power Stroke 2008-2010. Common-rail piezo injectors controlled via FICM; no HEUI/ICP/IPR. Diagnose electrical circuit fault for…
• P0234 — Turbocharger/Supercharger Overboost Condition (6.4 Power Stroke) Diagnostic reference for 6.4L Power Stroke 2008-2010 twin sequential fixed-geometry compound turbos, no VGT/vanes. Boost pressure has exceeded the maximum…
• P0263 — Cylinder 1 Contribution/Balance Fault (6.4 Power Stroke) P0263 is a contribution/balance fault for cylinder 1 on the 6.4L Power Stroke. The PCM detects cylinder 1 output deviating from the others in the Pxx6x family.
• P0299 — Turbocharger/Supercharger Underboost Condition (6.4 Power Stroke) P0299 indicates boost pressure is below the minimum expected for current conditions on the 6.4L Power Stroke 2008-2010 twin sequential fixed-geometry compound…
• P0401 — Exhaust Gas Recirculation Flow Insufficient (6.4 Power Stroke) Diagnostic reference for 6.4L Power Stroke (2008–2010) EGR flow insufficient.
• P0402 — Exhaust Gas Recirculation Flow Excessive (6.4 Power Stroke) Diagnostic reference for 6.4L Power Stroke 2008-2010.
• P0404 — Exhaust Gas Recirculation Control Circuit Range/Performance (6.4 Power Stroke) Diagnostic reference for 6.4L Power Stroke 2008-2010. Platform facts are authoritative.
• P0420 — Catalyst System Efficiency Below Threshold (6.4 Power Stroke) Diagnostic reference for 6.4L Power Stroke 2008-2010. P0420 is a generic catalyst efficiency code that on this platform maps to DOC (oxidation-catalyst)…
• P042E — Exhaust Gas Recirculation Control Stuck Open (6.4 Power Stroke) Exhaust Gas Recirculation Control Stuck Open
• P0546 — Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 1 Sensor 1 (6.4 Power Stroke) Diagnostic reference for 6.4L Power Stroke 2008-2010. Platform facts are authoritative and override any conflicting source. Rank causes most-likely first.
• P0611 — Fuel Injection Pump Fuel Metering Control Performance (6.4 Power Stroke) Diagnostic reference for 6.4L Power Stroke (2008–2010) common-rail with piezo injectors controlled via FICM. No HEUI/ICP/IPR on this platform.
• P2002 — Diesel Particulate Filter Efficiency Below Threshold (Bank 1) (6.4 Power Stroke) Diagnostic reference for 6.4L Power Stroke (2008–2010) DPF efficiency below threshold.
• P2262 — Turbocharger Boost Pressure Not Detected (6.4 Power Stroke) Diagnostic reference for 6.4L Power Stroke (2008-2010) twin sequential fixed-geometry turbos. Code sets when the PCM sees boost lower than expected or not…
• P2263 — Turbocharger/Supercharger Boost System Performance (6.4 Power Stroke) Diagnostic reference for 6.4L Power Stroke (2008-2010) twin sequential fixed-geometry compound turbos, no VGT.
• P244A — Diesel Particulate Filter Differential Pressure Too Low (Bank 1) (6.4 Power Stroke) Diesel Particulate Filter Differential Pressure Too Low (Bank 1)
• P244B — Diesel Particulate Filter Differential Pressure Too High (Bank 1) (6.4 Power Stroke) The PCM sees a pressure difference across the DPF that is higher than expected, indicating excessive restriction in the aftertreatment path. On the 6.4L Power…
• P2457 — Exhaust Gas Recirculation (EGR) Flow Too Low (6.4 Power Stroke) Diagnostic reference for 6.4L Power Stroke (2008-2010) P2457.
• P2459 — Diesel Particulate Filter Regeneration Frequency (6.4 Power Stroke) P2459 indicates the PCM has detected DPF regenerations occurring more often than expected on a 6.4L Power Stroke (2008-2010). The code is a valid DPF…
• P2463 — Diesel Particulate Filter Restriction - Soot Accumulation (6.4 Power Stroke) P2463 indicates the PCM has detected excessive soot loading in the DPF, restricting exhaust flow on the 6.4L Power Stroke.