Catalog / DENSO / PY01-13-250
DENSO

PY01-13-250

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SolenoidDenso D-4S / SkyActiv-G High-Pressure Direct Gasoline Injection (200 bar)Euro 56

DENSO PY01-13-250 Direct Fuel Injector Mazda 3 6 CX-5 CX-9 2.5L SkyActiv-G PY-VPS FJ1254

Reference data for Bosch PY01-13-250 common rail injector · OEM PY01-13-250A, FJ1254, 842-12390 · Application Mazda 2.0L & 2.5L SkyActiv-G / 2.5T Turbo (PE-VPS / PY-VPS / PY-VPTS)
OE REFERENCEPY01-13-250A, FJ1254, 842-12390
CONTROL VALVE-
NOZZLE-
RAIL PRESSURE200 bar
EMISSIONEuro 5 / Euro 6
WARRANTY12 Months
01

Compatible Injectors

OEM Ref
02

Vehicle & Engine Fitment

VehicleEngineYears
Mazda Mazda 3 2.0 / 2.5Mazda 2.0L & 2.5L SkyActiv-G / 2.5T Turbo (PE-VPS / PY-VPS / PY-VPTS)2014-2023
Mazda CX-5 2.0 / 2.5Mazda 2.0L & 2.5L SkyActiv-G / 2.5T Turbo (PE-VPS / PY-VPS / PY-VPTS)2013-2023
Mazda Mazda 6 2.5Mazda 2.0L & 2.5L SkyActiv-G / 2.5T Turbo (PE-VPS / PY-VPS / PY-VPTS)2014-2021
03

Technical Specifications

SpecificationValue
part_numberPY01-13-250
oem_referencePY01-13-250
manufacturerDENSO
system_typeFuel Injector
pressure_rating200 bar (2900 psi)
operating_temperature-40°C to +135°C
flange_mount_torque10 N-m (89 lb-in)
high_pressure_line_torque26 N-m (19 lb-ft)
diagnostic_dtcP0300, P0301, P0171, P0172
Operating PressureCore Spec

Matched High-Pressure Fuel Pump (Fuel Circuit Assembly)

Operates on the same high-pressure rail circuit. When troubleshooting low rail pressure (DTC P0087), verify pump volumetric delivery before replacing injectors.

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04

Installation Tips

  1. Depressurize the fuel system completely via diagnostic scan tool or by removing the fuel pump fuse prior to line disassembly.
  2. Clean all surrounding bracket areas thoroughly using residue-free brake cleaner to prevent abrasive particulate ingress.
  3. Inspect the mechanical camshaft lobe and roller follower or clean injector bore seating surfaces before hardware alignment.
  4. Install component using fresh factory O-rings or Teflon combustion chamber seals lubricated only with clean motor oil.
  5. Torque mounting flange fasteners in alternating increments to 10 N-m (89 lb-in).
  6. Torque high-pressure hydraulic tube fittings using a calibrated flare nut wrench to 26 N-m (19 lb-ft).
  7. Prime low-pressure fuel circuit, cycle ignition key 3-4 times, and inspect for high-pressure hydraulic leaks before road test.
Tips & Warnings:
  • Always replace single-use high-pressure metal fuel lines and micro-filter seals whenever disconnected.
  • Verify camshaft driving lobe surfaces for scoring or flat spots before installing any mechanical pump.
  • Reset long-term and short-term fuel trim adaptations via OBD-II diagnostic scanner after physical replacement.
05

Diagnostic Trouble Codes & Fault Protocols

Common diagnostic trouble codes (DTCs) triggered when this common rail injector experiences wear, circuit faults, or calibration drift:

P0087Critical

Fuel Rail / System Pressure Too Low

Excessive internal backleak from worn control valve seats drops common rail pressure below target under engine load.

P0201 - P0208High

Injector Circuit Malfunction / Open Circuit

Solenoid coil resistance drift (0.2-0.5 Ω) or piezo stack degradation triggers driver stage shutdown on affected cylinders.

P0300 / P0301+High

Cylinder Misfire & Balancing Deviation

Carbon-clogged nozzle spray holes or missing IMA calibration causes uneven cylinder contribution. Recode ECM and verify washer seating.

P0088High

Fuel Rail / System Pressure Too High

Spill line backpressure or stuck metering valve prevents rail depressurization, creating overpressure risks under load.

Technical Diagnostic & Service Protocols

Authoritative field procedures, diagnostic testing thresholds, and service SOPs for this assembly.

Workshop Diagnostic Protocol

Common Rail Injector Back-Leak Testing Guide

Common rail injector backleak test protocol. Graduated cylinder setup, warm idle & cranking limits in mL/min, control valve wear & P0087 diagnosis.

Read Technical Protocol
COMMON RAIL DIESEL WORKSHOP SOP

Stuck Injector Removal & Carbon Cleaning SOP | FuelPartsDB

Comprehensive workshop SOP for stuck diesel injector removal, pneumatic vibro-puller extraction, carbon solvent softening, and seat reaming without damage.

Read Technical Protocol
ASSEMBLY & INSTALLATION PROTOCOL

Diesel Injector Torque Specs & TTY Angles Guide

Common rail diesel injector hold-down bolt torque specs, TTY angles & pipe unions. Covers Bosch, Detroit DD13, Cummins & VAG 2.0 TDI workshop data in Nm.

Read Technical Protocol