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P2004 on Toyota Camry TRD

Intake Manifold Runner Control (IMRC) Stuck Open (Bank 1)

Factory diagnostic protocol and troubleshooting wire for fault code P2004 specifically for the Toyota Camry TRD (2020–2025, 3.5L V6 DOHC 24V with Dual VVT-i (301 HP / TRD Cat-Back Exhaust)).

Verified OEM Telemetry & Field Repair Tree
Toyota Camry TRD2020–2025
Toyota Camry TRD
Sedan3.5L V6 DOHC 24V with Dual VVT-i (301 HP / TRD Cat-Back Exhaust)
Reliability
Sensor Voltage Ref
0.1V – 5.0V Ref
Camry TRD 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
$150 - $600 (DIY: $40 - $180)
Parts & Labor DIY
Check P2004 On Another Toyota Model:
Diagnose P2004 on Specific Camry TRD Model Year:

1. Symptoms of P2004 on Toyota Camry TRD

When the Engine Control Module (ECM/PCM) on your Toyota Camry TRD (3.5L V6 DOHC 24V with Dual VVT-i (301 HP / TRD Cat-Back Exhaust)) logs fault code P2004, drivers commonly observe:

Check Engine Light on on Toyota Camry TRD (3.5L V6 DOHC 24V with Dual VVT-i (301 HP / TRD Cat-Back Exhaust))
Sluggish low-RPM acceleration and low-end torque loss on Toyota Camry TRD (3.5L V6 DOHC 24V with Dual VVT-i (301 HP / TRD Cat-Back Exhaust))
Engine runs fine at high highway RPMs (3,500+ RPM) on Toyota Camry TRD (3.5L V6 DOHC 24V with Dual VVT-i (301 HP / TRD Cat-Back Exhaust))
Slightly rough idle or minor intake whistling noise on Toyota Camry TRD (3.5L V6 DOHC 24V with Dual VVT-i (301 HP / TRD Cat-Back Exhaust))
Toyota Camry TRD OBD-II Port Location
The 16-pin diagnostic connector is located Driver footwell lower knee bolster panel. Plug in your scan tool to verify freeze-frame sensor values.

2. Most Likely Causes on Toyota Camry TRD

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

55%
Carbon buildup binding the intake manifold swirl flap runner plates (Toyota OEM Part)
25%
Broken plastic IMRC actuator linkage rod or vacuum diaphragm (Toyota OEM Part)
12%
Faulty electronic IMRC runner control motor / solenoid (Toyota OEM Part)
8%
Cracked vacuum line to IMRC actuator (Toyota OEM Part)
* Source: Synthesized from NHTSA ODI field repair telemetry and verified OEM Technical Service Bulletin (TSB) repair tree frequency percentiles for Toyota Camry TRD.

3. Step-by-Step DIY Repair Guide for Toyota Camry TRD

01
Visually Inspect IMRC Actuator Linkage

Check the mechanical plastic linkage arms at the end of the intake manifold. Verify arms are not popped off or broken. on the Toyota Camry TRD equipped with 3.5L V6 DOHC 24V with Dual VVT-i (301 HP / TRD Cat-Back Exhaust).

Required Tool: Flashlight, Mirror
02
Test Runner Flap Movement Manually

Move the runner lever by hand. It should spring back smoothly without binding or gritty resistance. on the Toyota Camry TRD equipped with 3.5L V6 DOHC 24V with Dual VVT-i (301 HP / TRD Cat-Back Exhaust).

Required Tool: None
03
Test IMRC Solenoid / Actuator Motor

Command IMRC open and closed with bi-directional scan tool or check vacuum supply to diaphragm. on the Toyota Camry TRD equipped with 3.5L V6 DOHC 24V with Dual VVT-i (301 HP / TRD Cat-Back Exhaust).

Required Tool: OBD-II Bi-Directional Scanner or Vacuum Gauge
04
Clean Intake Manifold Carbon or Replace Actuator

Replace the broken linkage/actuator motor or remove manifold to clean heavy carbon deposits around the butterfly flaps. on the Toyota Camry TRD equipped with 3.5L V6 DOHC 24V with Dual VVT-i (301 HP / TRD Cat-Back Exhaust).

Required Tool: Socket Set, Carburetor Cleaner, Gasket Set
05
Clear DTCs and Verify Runner Operation

Clear trouble codes and confirm low-end acceleration is restored. on the Toyota Camry TRD equipped with 3.5L V6 DOHC 24V with Dual VVT-i (301 HP / TRD Cat-Back Exhaust).

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

Equipment for Diagnosing Toyota Camry TRD (P2004)

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Toyota Camry TRD OEM Replacement Sensor

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Sensor Signal Voltage Meter

AstroAI Auto-Ranging Digital Multimeter

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

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BlueDriver Bluetooth Pro OBDII Scan Tool

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

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Other Common Fault Codes on Toyota Camry TRD

Frequently diagnosed powertrain, emissions, and sensor trouble codes logged on the Toyota Camry TRD:

4. Toyota Camry TRD P2004 FAQs

What causes code P2004 to trigger on a Toyota Camry TRD?

On the Toyota Camry TRD (3.5L V6 DOHC 24V with Dual VVT-i (301 HP / TRD Cat-Back Exhaust)), P2004 is most frequently caused by Carbon buildup binding the intake manifold swirl flap runner plates or Broken plastic IMRC actuator linkage rod or vacuum diaphragm.

Where is the OBD-II port located on my Toyota Camry TRD?

On the Toyota Camry TRD, the 16-pin DLC diagnostic connector is located Driver footwell lower knee bolster panel. 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 Camry TRD with code P2004?

Yes. Low-end engine torque will feel sluggish, but vehicle is drivable. Given that P2004 carries a Medium severity rating, we advise avoiding heavy towing or aggressive throttle inputs until sensor readings are verified.