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OEM Intake Air Pressure Sensor 12592017: 2026 GM MAP/IAT Technical Guide for Buick Regal & Chevrolet

by flippancy 09 Jun 2026

What the 12592017 Does on Your GM Turbo Engine

The OEM Intake Air Pressure Sensor 12592017 is a combined Manifold Absolute Pressure (MAP) and Intake Air Temperature (IAT) sensor built to GM Genuine specifications for the 2.0L Ecotec LHU/LNF turbo platform. One part feeds the ECM two inputs: absolute manifold pressure in kPa and charge air temperature in °C.

The ECM uses both signals for fuel trim, ignition timing and turbocharger boost control, so a drifting sensor skews the whole boost strategy. Fitment: the 2011 Buick Regal CXL (LHU), 2008–2010 Chevrolet Cobalt SS, HHR SS, Pontiac Solstice GXP and Saturn Sky Red Line.

Specification GM 12592017
Part number GM 12592017 (ACDelco 213-3847)
Function Combined MAP + IAT, analog 0-5V output, passive thermistor circuit
Pressure range 10–115 kPa absolute (±1.5% FS)
Temp element NTC thermistor, 2.5 kΩ @ 25°C (Beta 3977K), IEC 60751 Class B
Seal and media Silicone O-ring (ASTM D2000 M4GE), gasoline, ethanol to E85, turbo oil vapor
Operating envelope -40°C to +125°C
Housing Glass-fiber-reinforced PPS, rated 220°C continuous
Connector 3-pin GT150 sealed (IP67)
Durability 2,000+ thermal cycles, exceeds SAE J1455 (2026 revision)
Primary DTCs P0106-P0108 (MAP circuit), P0096-P0099 (IAT sensor 2)
Applications 2007–2010 Cobalt SS, HHR SS, Solstice GXP, Sky Red Line; 2011 Regal (LHU, 1st design)

2026 Compliance: OBDonUDS and ISO/SAE 21434

SAE J1979-2 OBDonUDS becomes mandatory for all 2027 model-year vehicles. The 12592017 stays backward-compatible with legacy OBD-II CAN protocols (ISO 15765-4) and meets 2026 diagnostic readiness thresholds under ISO/SAE 21434.

The sensor stays protocol-agnostic

It outputs an analog 0-5V DC signal plus passive thermistor resistance and carries no digital protocol of its own; the ECM bridges that data into UDS-based DTC reporting under SAE J1979-2 and the updated SAE J2012 definitions effective 2026. The analog circuit also remains compatible with modern ECU ADCs used in transitional zonal architectures through 2026.

What ISO/SAE 21434 means for a passive part

As a passive analog sensor, the 12592017 offers no attack surface for CAN-bus intrusion. Under 2026 guidelines, the ECM's interpretation of its signal falls under secure boot and authenticated diagnostic access, so spoofed MAP/IAT values cannot enter the vehicle network. That guard matters most as GM moves to the Global B / VIP architecture with gateway-isolated sensor domains.

DTC Map: Five Code Ranges, One Sensor

A single 12592017 fault can cascade across five DTC families on the LHU/LNF platform, caught earlier through MAP/IAT correlation against MAF and O2 data streams in GM's Global B calibrations. Read the full map before you order parts.

DTC Range Failure Mode Diagnostic Priority
P0106-P0108 MAP circuit range/performance, low voltage, high voltage Critical: affects fuel metering and boost control
P0096-P0099 IAT sensor 2 circuit range, low, high, intermittent High: affects charge density and knock prediction
P0234-P0238 Turbo overboost against a MAP-derived threshold High: may point to sensor drift rather than a mechanical fault
P0299 Turbo underboost, MAP below expected for load Moderate: rule out the sensor before the wastegate or turbo
P0113 IAT sensor 1 circuit high, cascading from an IAT2 fault Moderate: cross-check the IAT1 vs IAT2 delta

12592017 vs 12644807 vs Generic Aftermarket

Specification GM 12592017 GM 12644807 Generic Aftermarket
Authenticity Genuine GM / ACDelco, 12-month warranty Genuine GM, 2nd design for 2011+ Regal Non-OEM, variable quality control
Pressure range 10–115 kPa (±1.5% FS) 10–130 kPa (±1.2% FS) Unverified, often ±3-5% FS
Temp element NTC, 2.5 kΩ @ 25°C (Beta 3977K) NTC, 2.5 kΩ @ 25°C (Beta 3977K) Unspecified curve, ECM mismatch risk
Housing PPS glass-fiber, 220°C rated PPS glass-fiber, 220°C rated PA66 or ABS, melts above 180°C
Connector 3-pin GT150 sealed (IP67) 3-pin GT150 sealed (IP67) Often unsealed, corrosion risk
Application 2007–2010 Cobalt, HHR, Solstice, Sky + 2011 Regal (1st design) 2011–2013 Regal (2nd design), ATS, CTS, Camaro Cross-listed, check fitment

Data verified as of May 2026. The 12592017 is the correct 1st-design sensor for a 2011 Buick Regal with the LHU engine. Two bolt holes and a square connector orientation mean 1st design; single bolt orientation on the revised intake manifold means the 12644807. VIN 8th digit V confirms the LHU 2.0L turbo engine. Generic copies may also fail to set the correct DTCs.

Symptoms and the KOEO Check

Five field symptoms on the LHU Ecotec

  • Intermittent hard start with a long crank: the ECM defaults to barometric MAP, so cranking fuel is wrong.
  • Surging idle of ±150 RPM with long-term fuel trim past ±12%.
  • Part-throttle hesitation between 2,200–3,200 RPM under light boost.
  • Fuel economy down 15-22%, verified through 2026 GM Tech2Win PID logging.
  • MIL with stored P0106 or P0097 history codes that self-clear after cold soak.

Any two or more of these together justify pulling the sensor for inspection.

Drift or boost leak? Run the KOEO test

About 65% of 2026-documented LHU cases with simultaneous P0106 and P0299 trace to MAP sensor drift rather than a boost leak. The silicon diaphragm develops micro-fractures after 80,000–120,000 miles, creating a 5–8 kPa offset at wide-open throttle, which the ECM reads as underboost and as a MAP range fault.

With a bidirectional scan tool, command the boost control solenoid and graph MAP voltage at key-on, engine-off. Expect roughly 100 kPa at sea level. If the KOEO reading sits more than 4 kPa off the barometric reference, replace the sensor before running a smoke test.

Installation Torque and Drive Cycle

Torque the sensor to 2.5–3.5 N·m (22–31 in-lb) with a calibrated torque wrench. Skip thread sealant: the integral O-ring provides the seal.

After replacement, perform an ECM adaption reset and complete the GM drive-cycle protocol: idle 3 minutes, cruise at 55 mph for 5 minutes, decel to 20 mph without braking, then repeat twice to clear all readiness monitors.

Ford EcoBoost and Toyota (Lexus) platforms do not share this part number; they use functionally equivalent Bosch/Tyco sensors, so check manufacturer-specific catalogs for cross-platform work.

Parts That Run Alongside This Diagnostic

Because 2026 ECM calibrations cross-check MAP/IAT against O2 data streams, a lazy oxygen sensor can muddy a boost diagnosis. If you service the L4 2.4L in a Chevrolet Impala or Malibu, or a Buick LaCrosse or Regal, this 2x oxygen sensor for Chevrolet Impala, Malibu, Buick LaCrosse and Regal matches those applications.

Fuel-side pressure faults land on a different part: the fuel injection pressure sensor 12635273 fits Buick Regal, LaCrosse, Chevrolet and GMC applications.

Electrical catalog and fuel delivery guide

For the wider electrical catalog, the starters, alternators and ECUs collection gathers Koeep's auto and motorcycle electrical parts in one place.

Working on a later GM sedan? The 2026 buyer's guide to 2013–2014 GM fuel pump assemblies covers the Buick LaCrosse, Regal, Chevrolet Malibu and Impala.

Need the 12592017 or a fitment check?

Send your VIN and the codes you are seeing through the request-for-quote page, email support@koeep.com, or message the shop on WhatsApp.

Koeep keeps verified OEM inventory of the 12592017 sensor with full traceability to GM's supply chain, covering the 2026–2030 service window under GM's 10-year parts retention mandate.

Start a request for quote

Frequently Asked Questions

P0106 and P0299 came up together on my 2011 Regal 2.0L Turbo. Is the sensor bad?

In about 65% of 2026-documented LHU cases, that pairing traces to MAP sensor drift ahead of any boost leak. Diaphragm micro-fractures after 80,000–120,000 miles produce a 5–8 kPa offset at wide-open throttle. Graph MAP voltage at key-on, engine-off: about 100 kPa at sea level is the reference, and a reading more than 4 kPa off barometric means replace the 12592017 sensor before running a smoke test.

Why does 12592017 supersede to 12644807, and which one fits my car?

GM released 12644807 as a 2nd design for the 2011+ Buick Regal, with revised bolt-hole geometry and a 130 kPa full-scale range. The 1st-design 12592017 fits the 2007–2010 Cobalt SS, HHR SS, Solstice GXP, Sky Red Line and a 2011 Regal 1st design. Two bolt holes with a square connector means 12592017, single bolt orientation means 12644807, and VIN 8th digit V confirms the LHU engine.

Will the sensor still work with my scan tool after OBDonUDS arrives in 2027?

Yes. It is an analog part: a 0-5V DC signal plus passive thermistor resistance, and the ECM converts those values into DTCs and PID data. The 2026–2027 move to SAE J1979-2 and CAN FD affects the scan tool and ECM interface, while the sensor and ECM interface stays analog, so a UDS-capable scanner covers 2027+ vehicles and this part keeps working as is.

What torque does the 12592017 need, and what happens after install?

2.5–3.5 N·m (22–31 in-lb) with a calibrated torque wrench, and no thread sealant because the integral O-ring seals the port. Then perform an ECM adaption reset and run the drive cycle: idle 3 minutes, cruise at 55 mph for 5 minutes, decel to 20 mph without braking, repeat twice to clear all readiness monitors.

Why pay OEM prices over a generic aftermarket copy?

The Genuine GM part uses a hermetically sealed NTC thermistor and a micromachined silicon diaphragm tested through 2,000+ thermal cycles, exceeding SAE J1455 requirements updated for 2026. Copies often run ±3-5% full-scale accuracy instead of ±1.5%, use PA66 or ABS housings that melt above 180°C, ship unsealed connectors prone to corrosion, and may fail to set the correct DTCs.

Which DTC codes point at this sensor?

Primary triggers are P0106-P0108 for the MAP circuit and P0096-P0099 for IAT sensor 2. Cascading faults include P0234-P0238 for overboost, P0299 for underboost and P0113 for an IAT1 high input. Under OBDonUDS (J1979-2) these DTCs use the 3-byte format with Failure Record Data updating each diagnostic cycle, plus GM-specific TIDs for MAP/IAT rationality reported via Mode $06.

Sources & further reading:
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