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P0152 on Toyota Crown

O2 Sensor Circuit High Voltage (Bank 2 Sensor 1)

Factory diagnostic protocol and troubleshooting wire for fault code P0152 specifically for the Toyota Crown (2023–2026, 2.4L Turbo Hybrid MAX (340HP) / 2.5L THS II Hybrid AWD).

Verified OEM Telemetry & Field Repair Tree
Toyota Crown2023–2026
Toyota Crown
Sedan2.4L Turbo Hybrid MAX (340HP) / 2.5L THS II Hybrid AWD
Reliability
Sensor Voltage Ref
0.1V – 5.0V Ref
Crown SAE Mode $01
ECU Network Bus
500 kbps CAN-FD
ISO 15765-4 Compliant
Drivability Status
Drivable (Short Trip)
High urgency level
Est. Repair Cost
$130 - $380
Parts & Labor DIY
Check P0152 On Another Toyota Model:
Diagnose P0152 on Specific Crown Model Year:

1. Symptoms of P0152 on Toyota Crown

When the Engine Control Module (ECM/PCM) on your Toyota Crown (2.4L Turbo Hybrid MAX (340HP) / 2.5L THS II Hybrid AWD) logs fault code P0152, drivers commonly observe:

Check Engine Light on on Toyota Crown (2.4L Turbo Hybrid MAX (340HP) / 2.5L THS II Hybrid AWD)
Black smoke on Bank 2 exhaust on Toyota Crown (2.4L Turbo Hybrid MAX (340HP) / 2.5L THS II Hybrid AWD)
Poor fuel economy on Toyota Crown (2.4L Turbo Hybrid MAX (340HP) / 2.5L THS II Hybrid AWD)
Toyota Crown OBD-II Port Location
The 16-pin diagnostic connector is located Driver lower footwell beneath OBD protective lip. Plug in your scan tool to verify freeze-frame sensor values.

2. Most Likely Causes on Toyota Crown

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

55%
Failed Bank 2 O2 sensor (Toyota OEM Part)
25%
Leaking Bank 2 fuel injector (Toyota OEM Part)
12%
O2 sensor shorted to 12V (Toyota OEM Part)
* Source: Synthesized from NHTSA ODI field repair telemetry and verified OEM Technical Service Bulletin (TSB) repair tree frequency percentiles for Toyota Crown.

3. Step-by-Step DIY Repair Guide for Toyota Crown

01
Scan and Record Freeze Frame Telemetry

Connect an OBD-II scan tool and record freeze frame sensor telemetry for code P0152 to note engine RPM, load, and voltage when the fault triggered. on the Toyota Crown equipped with 2.4L Turbo Hybrid MAX (340HP) / 2.5L THS II Hybrid AWD.

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

Inspect the electrical connector and wiring harness related to P0152 for chafing, corrosion, moisture, or pin push-out. on the Toyota Crown equipped with 2.4L Turbo Hybrid MAX (340HP) / 2.5L THS II Hybrid 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 Crown equipped with 2.4L Turbo Hybrid MAX (340HP) / 2.5L THS II Hybrid 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 Crown equipped with 2.4L Turbo Hybrid MAX (340HP) / 2.5L THS II Hybrid 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 Crown equipped with 2.4L Turbo Hybrid MAX (340HP) / 2.5L THS II Hybrid AWD.

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

Equipment for Diagnosing Toyota Crown (P0152)

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Toyota Crown OEM Replacement Sensor

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

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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.

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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 CrownVerified direct-fit pricing from Denso, Bosch, Motorcraft, and ACDelco on Amazon.
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Other Common Fault Codes on Toyota Crown

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

4. Toyota Crown P0152 FAQs

What causes code P0152 to trigger on a Toyota Crown?

On the Toyota Crown (2.4L Turbo Hybrid MAX (340HP) / 2.5L THS II Hybrid AWD), P0152 is most frequently caused by Failed Bank 2 O2 sensor or Leaking Bank 2 fuel injector.

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

On the Toyota Crown, the 16-pin DLC diagnostic connector is located Driver lower footwell beneath OBD protective lip. 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 Crown with code P0152?

Caution. Bank 2 reported rich. Given that P0152 carries a High severity rating, we advise avoiding heavy towing or aggressive throttle inputs until sensor readings are verified.