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402529 Intake Pressure Sensor: Fitment, DTC Coverage, and Specs

A MAP code on a Textron Stampede or Havoc usually means the intake pressure sensor has drifted. The 402529 Intake Pressure Sensor is the direct-fit replacement for the Stampede XTR, Stampede 4, and Havoc platforms, and it plugs into the stock connector.

Under the housing is a solid-state piezoresistive transducer that feeds real-time manifold absolute pressure (MAP) data to the ECM. The 402529 meets 2026 SAE J1939-31 and ISO 16750-2 environmental thresholds, transmits over CAN 3.0 at 500 kbps, and stays backward-compatible with CAN 2.0b ECUs.

• Fits Stampede XTR (2019–2026), Stampede 4 (2020–2026), Havoc (2019–2026), Havoc X (2021–2026)
• 10–115 kPa absolute range, factory-calibrated to ±0.8 kPa
• Analog 0.25V to 4.75V output plus J1939 digital on PGN 65270
• Keyed Delphi Metri-Pack 150.2 connector, so no re-pinning and no ECM reflash
• PPS GF30 housing, IP69K ingress rating, -40°C to +150°C tolerance
• Addresses P0105, P0106, P0107, P0108, and P0109

Old units fail on a schedule. OEM sensors from 2019–2024 drift about ±2.5 kPa at the low end of the curve past 2,000 hours, so the ECM sees a MAP value that no longer matches its barometric reference. Toyota flagged this aging-drift pattern in a 2026 technical bulletin, and the 402529 answers it with ±0.8 kPa factory calibration.

DTC Codes This Sensor Clears

These are the MAP circuit codes the Textron ECM monitors, and what the 402529 does about each one.

Inside the 402529

Housing and heat tolerance

The body is 30% glass-fiber-reinforced PPS built to the SAE J2030-2026 under-hood thermoplastic standard. It holds continuous service from -40°C to +150°C, past the 125°C ceiling of the nylon-6,6 housings on 2019–2024 OEM sensors. The silicone-gel die-coat on the MEMS element adds moisture and contaminant isolation for high-dust trail duty.

Signal path

An onboard ASIC applies fourth-order low-pass filtering with a 0.5 ms response time. That strips the transient voltage spikes behind nuisance P0106 and P0109 codes on first-generation EFI systems. The output is linear from 0.25V to 4.75V against the 5V reference, so it drops into the Textron ECM lookup table without a tune.

How Failure Progresses

Documented degradation on Stampede XTR and Havoc fleets moves through three stages:

1. Stage 1 (2,500–4,000 hours): gradual enrichment at wide-open throttle. The sensor under-reports manifold pressure by 1.5–2.0 kPa, visible as a 3–5% fuel consumption increase with no dash light.
2. Stage 2 (4,000–5,500 hours): cold-start stumble and altitude hesitation. Fuel trim exceeds ±15%, so pending P0171 or P0174 lean codes appear and may self-clear.
3. Stage 3 (5,500+ hours): a hard P0106 or P0108 sets. The machine enters limp-home mode with a fixed 10° ignition retard and capped RPM. Replace the sensor.

The 402529 pushes Stage 1 onset past 8,000 operational hours through its PPS housing and MEMS die-coat.

Two Checks Before You Order

P0106 at altitude

A P0106 after cold starts at elevation points to drift in the 15–25 kPa zone, where manifold pressure sits near atmospheric at idle. Compare KOEO (key-on, engine-off) MAP against local barometric pressure with a scan tool. A gap over 2 kPa means the sensor has degraded.

P0109 wiggle test

A pending P0109 on a Havoc usually traces to fretting corrosion in the connector. At idle, wiggle the connector while watching MAP voltage through the DLC. Movement past 0.1V pins the fault on the connector. The 402529 uses gold-plated terminals instead of OEM tin, holding contact resistance drift under 10 mΩ, plus a pre-greased silicone seal against moisture.

Installation Without Dealer Tools

The keyed Delphi Metri-Pack 150.2 connector only goes in one way. The output curve is pre-calibrated to the factory MAP table (0.25V = 10 kPa, 4.75V = 115 kPa), and the ECM adapts fuel trims within 2–3 drive cycles.

On 2026 units with CAN 3.0 gateways, clear the stored DTCs and run a key-cycle reset: ignition ON for 10 seconds, OFF for 10 seconds, repeat 3×. That forces an immediate sensor rationality self-test.

Fitment and Cross-References

• Textron Stampede XTR, 2019–2026
• Textron Stampede 4, 2020–2026
• Textron Havoc, 2019–2026
• Textron Havoc X, 2021–2026

The sensor cross-references Textron OEM part numbers 402529 and 402529-001, plus superseded PN 401826-01. Coverage runs back to 2019 platforms with a validated service window through 2030. On CAN 3.0 machines, J1939 parameter group number 65270 ties it to the digital dash and fleet telemetry modules.

We also carry MAP sensors for other makes: the FR3A-9G824-BA (M799G, A2C96125500) intake pressure sensor covers Ford applications, and the 22365-JF00D MAP sensor fits the Nissan Juke, Sentra, and GT-R from 2009–2023. Starters, alternators, ECUs, and wiring sit in our electrical parts catalog.

402529 vs. Older Units

Legacy column is pre-2024 aftermarket. OEM column is Textron 2019–2024.

Why 2026 Firmware Is Harder on Old Sensors

ECM calibration is tightening. Ford's 2026 Bronco Raptor sensor suite, GM's Colorado/Canyon ZR2 platform, and Toyota's 2026 Tacoma TRD Pro all move toward redundant dual-path sensor architectures.

Atmospheric compensation algorithms derived from the Tesla Cybertruck program have also spread through the supply chain, validating a wide 10–115 kPa envelope as the 2026 benchmark for altitude-compensated fuel mapping. For the bigger picture, read our 2026 autonomous vehicle sensor outlook.

For Textron owners the result is concrete: 2026 firmware cross-checks MAP against MAF and throttle position within a ±3 kPa window, so a sensor that passed in 2020 can set codes today. The 402529 maps to the P0105 through P0109 circuit range, the P0171 to P0174 fuel trim range, and the P0236 to P0238 boost correlation range on forced-induction Havoc variants.

Dual-channel output

Because the 402529 carries both an analog and a digital path, the analog 0 to 5V signal stays available for limp-home fuel mapping if the CAN bus degrades. Single-path aftermarket sensors lose that margin.

Traceability and QC

Every unit is serialized and traceable to its calibration certificate, logged against NIST-traceable pressure references. End-of-line testing checks output at five pressure points (10, 35, 65, 90, 115 kPa) and runs thermal cycling plus a 24-hour burn-in at 125°C.

The gold-over-nickel plating meets SAE/USCAR-2 Revision 7, targeting the fretting corrosion documented in Textron TSB-24-006 (Q3 2024). The die-coat conforms to MIL-STD-883 Method 5011 for contamination isolation.

Frequently Asked Questions