MazicBay Diagnostics
MAZICBAYDiagnostics
FTC Reader Disclosure: When you purchase or register through links on our site, we may earn an affiliate commission at no extra cost to you. Read our Editorial & Advertising Policy.

P2008 on Toyota Grand Highlander

Intake Manifold Runner Control Circuit/Open (Bank 1)

Factory diagnostic protocol and troubleshooting wire for fault code P2008 specifically for the Toyota Grand Highlander (2024–2026, 2.4L Turbo / 2.5L Hybrid / Hybrid MAX 362HP Turbo AWD).

Verified OEM Telemetry & Field Repair Tree
Toyota Grand Highlander2024–2026
Toyota Grand Highlander
SUV2.4L Turbo / 2.5L Hybrid / Hybrid MAX 362HP Turbo AWD
Reliability
Sensor Voltage Ref
0.1V – 5.0V Ref
Grand Highlander SAE Mode $01
ECU Network Bus
500 kbps CAN-FD
ISO 15765-4 Compliant
Drivability Status
Drivable (Short Trip)
Medium urgency level
Est. Repair Cost
$120 - $350
Parts & Labor DIY
Check P2008 On Another Toyota Model:
Diagnose P2008 on Specific Grand Highlander Model Year:

1. Symptoms of P2008 on Toyota Grand Highlander

When the Engine Control Module (ECM/PCM) on your Toyota Grand Highlander (2.4L Turbo / 2.5L Hybrid / Hybrid MAX 362HP Turbo AWD) logs fault code P2008, drivers commonly observe:

Check Engine Light on on Toyota Grand Highlander (2.4L Turbo / 2.5L Hybrid / Hybrid MAX 362HP Turbo AWD)
Loss of high-RPM horsepower on Toyota Grand Highlander (2.4L Turbo / 2.5L Hybrid / Hybrid MAX 362HP Turbo AWD)
Toyota Grand Highlander OBD-II Port Location
The 16-pin diagnostic connector is located Driver side lower knee panel above dead pedal. Plug in your scan tool to verify freeze-frame sensor values.

2. Most Likely Causes on Toyota Grand Highlander

Historical warranty claims and technical repair bulletins for Toyota Grand Highlander point to the following failure distribution:

55%
Failed IMRC electric solenoid valve (Toyota OEM Part)
25%
Broken wiring harness (Toyota OEM Part)
12%
Blown fuse (Toyota OEM Part)
* Source: Synthesized from NHTSA ODI field repair telemetry and verified OEM Technical Service Bulletin (TSB) repair tree frequency percentiles for Toyota Grand Highlander.

3. Step-by-Step DIY Repair Guide for Toyota Grand Highlander

01
Scan and Record Freeze Frame Telemetry

Connect an OBD-II scan tool and record freeze frame sensor telemetry for code P2008 to note engine RPM, load, and voltage when the fault triggered. on the Toyota Grand Highlander equipped with 2.4L Turbo / 2.5L Hybrid / Hybrid MAX 362HP Turbo AWD.

Required Tool: OBD-II Scanner
02
Inspect Related Wiring Harness & Connectors

Inspect the electrical connector and wiring harness related to P2008 for chafing, corrosion, moisture, or pin push-out. on the Toyota Grand Highlander equipped with 2.4L Turbo / 2.5L Hybrid / Hybrid MAX 362HP Turbo AWD.

Required Tool: Flashlight, Multimeter
03
Test Component Resistance & Voltage Supply

Measure circuit voltage supply (12V B+ or 5V reference) and sensor/actuator resistance according to factory repair manual specifications. on the Toyota Grand Highlander equipped with 2.4L Turbo / 2.5L Hybrid / Hybrid MAX 362HP Turbo AWD.

Required Tool: Digital Multimeter
04
Replace Defective Component

Install a new OEM-grade replacement part, torque fasteners to factory spec, and ensure electrical locking tabs click firmly. on the Toyota Grand Highlander equipped with 2.4L Turbo / 2.5L Hybrid / Hybrid MAX 362HP Turbo AWD.

Required Tool: Hand Tool Socket Set, Torque Wrench
05
Clear Trouble Codes & Complete Drive Cycle

Clear all stored DTCs from vehicle memory and perform an OBD-II drive cycle to confirm the diagnostic monitor resets to 'Ready'. on the Toyota Grand Highlander equipped with 2.4L Turbo / 2.5L Hybrid / Hybrid MAX 362HP Turbo AWD.

Required Tool: OBD-II Scanner
Recommended Parts & Testing Tools

Equipment for Diagnosing Toyota Grand Highlander (P2008)

Prime Fast Delivery & Verified Fitment
Direct-Fit Replacement Part

Toyota Grand Highlander OEM Replacement Sensor

4.7 / 5.0 (Verified Fit)

Direct-fit replacement assembly engineered to OEM tolerances for Toyota Grand Highlander.

$45 – $95 Prime
Check Fitment on Amazon
Sensor Signal Voltage Meter

AstroAI Auto-Ranging Digital Multimeter

4.6 / 5.0 (Best Seller)

Essential for testing 0.1V–5.0V sensor reference signals, ground continuity (<0.20Ω), and harness resistance.

$29.99 Prime
View on Amazon
Top Mobile OBD-II Scanner

BlueDriver Bluetooth Pro OBDII Scan Tool

4.7 / 5.0 (50,000+ Reviews)

Reads and clears enhanced codes (ABS, Airbag, Transmission, Engine) & live freeze-frame telemetry on phone.

Compare OEM & Aftermarket Replacement Sensors for Toyota Grand HighlanderVerified direct-fit pricing from Denso, Bosch, Motorcraft, and ACDelco on Amazon.
Find Parts on Amazon
* As an Amazon Associate, MazicBay earns from qualifying purchases. Prices & availability subject to change.

Other Common Fault Codes on Toyota Grand Highlander

Frequently diagnosed powertrain, emissions, and sensor trouble codes logged on the Toyota Grand Highlander:

4. Toyota Grand Highlander P2008 FAQs

What causes code P2008 to trigger on a Toyota Grand Highlander?

On the Toyota Grand Highlander (2.4L Turbo / 2.5L Hybrid / Hybrid MAX 362HP Turbo AWD), P2008 is most frequently caused by Failed IMRC electric solenoid valve or Broken wiring harness.

Where is the OBD-II port located on my Toyota Grand Highlander?

On the Toyota Grand Highlander, the 16-pin DLC diagnostic connector is located Driver side lower knee panel above dead pedal. Plug in any standard OBD-II scanner with the ignition in the ON position to read freeze-frame parameters.

Can I safely drive my Toyota Grand Highlander with code P2008?

Yes. Electrical circuit open to IMRC solenoid. Given that P2008 carries a Medium severity rating, we advise avoiding heavy towing or aggressive throttle inputs until sensor readings are verified.