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C00452025 Model Year TelemetryHigh Severity

C0045 on 2025 Cadillac Escalade-V

Left Rear Wheel Speed Sensor Circuit Malfunction

Technical troubleshooting wire for fault code C0045 specifically tailored for the 2025 Cadillac Escalade-V. Includes wiring sensor pinouts, freeze frame PID parameters, and step-by-step diagnostic tree.

2025 Engine Control Module (ECM) Specific Calibration
Cadillac Escalade-V2025 Escalade-V
2025 Cadillac Escalade-V
SUV • 6.2L Handbuilt Supercharged V8 (682HP / 653 lb-ft torque)
2025 Stats
Vehicle
2025 Escalade-V
6.2L Handbuilt Supercharged V8 (682HP / 653 lb-ft torque)
ECU Subsystem
Automotive OBD-II
SAE Mode $01 & $02
Est. Repair Cost
$120 - $320 (DIY: $30 - $70)
OEM Parts & DIY
Urgency Level
High
Drivable (Short)
Switch Escalade-V Model Year for C0045
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Common 2025 Escalade-V Symptoms

  • System alert or indicator light illuminated (C0045)
  • Intermittent performance throttling or unexpected operation halts
  • Audible sensor relay clicking or anomalous status telemetry in dashboard logs
  • Degraded operational throughput or error dialog popups on startup
  • Readiness monitors failing state emissions or system compliance audits

Likely Root Causes on 2025 Escalade-V

  • Component aging, oxidation, or degraded internal circuit element (Rear Left ABS Speed Sensor)
  • Wiring harness abrasion, loose terminal pin, or ground voltage float
  • Outdated firmware microcode or incompatible software driver update
  • Thermal stress or excessive operational duty-cycle fatigue
  • Contamination from carbon buildup, moisture ingress, or dirty filtration

Step-by-Step Fix Protocol for 2025 Cadillac Escalade-V

Step 1: Scan & Record Freeze Frame Data

Connect an OBD-II scanner to the DLC port under the driver dashboard. Record engine RPM, Short Term / Long Term Fuel Trim (STFT/LTFT), and engine coolant temperature at the moment C0045 set.

Step 2: Inspect Wiring Harness & Pin Voltages

Inspect the sensor connector on the 2025 Escalade-V engine bay. Use a multimeter to verify reference voltage (5.0V / 12.0V) and ground continuity.

Step 3: Component Replacement & PCM Reset

Replace the verified defective component using OEM or equivalent grade parts. Clear DTC C0045 and complete an EPA drive cycle to verify readiness monitors set to READY.

Recommended Parts & Testing Tools

Equipment for Diagnosing 2025 Cadillac Escalade-V (C0045)

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2025 Cadillac Escalade-V OEM Replacement Sensor

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Direct-fit replacement assembly engineered to OEM tolerances for 2025 Cadillac Escalade-V.

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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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