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C0045ModerateBrakes

C0045: Left Rear Wheel Speed Sensor Circuit

9 vehicles · 8 makes · $100-$1,500 repair

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Most Reported On

2000-2007Ford Focus2011-2023Chrysler 3002014-2023GMC Sierra 15002009-2014Nissan 370Z2002-2006Chevrolet Avalanche

C0045 is an OBD-II diagnostic trouble code meaning “Left Rear Wheel Speed Sensor Circuit.” The left rear wheel speed sensor has a circuit fault. This code is most commonly reported on 2000-2007 Ford Focus, 2011-2023 Chrysler 300, and 2014-2023 GMC Sierra 1500, plus 6 other vehicles, with repair costs ranging from $100 to $1,500.

On This Page

  • Common Causes
  • Repair Cost
  • Vehicles (9)
  • Related Codes
  • FAQ
  • Sources (12)

Makes

  • Chevrolet2
  • Chrysler1
  • Ford1
  • GMC1
  • Honda1
  • Jeep1
  • Kia1
  • Nissan1
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Common Causes

1Failed sensor
2Wiring damage from road debris
3Corroded connector
4Damaged tone ring
5Bearing hub assembly failure

Typical Repair Cost

$100 - $1,500

Based on 9 documented vehicle-specific issues. Actual cost depends on root cause and vehicle.

Diagnostic Tools

To diagnose C0045, you'll need an OBD-II scanner. Here are our recommendations at every price point.

Budget Pick$10–$20

ANCEL AD310 Classic OBD-II Scanner

by ANCEL

A simple, affordable code reader that reads and clears check engine codes. Great for quick diagnostics on any OBD-II vehicle (1996+).

  • Read & clear engine codes
  • View freeze frame data
  • I/M readiness status
  • No batteries or app needed
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Best Value$90–$120

BlueDriver Pro Bluetooth Scanner

by BlueDriver

Bluetooth OBD-II scanner with a free companion app. Provides enhanced diagnostics, smog readiness, and repair reports sourced from a database of verified fixes.

  • Enhanced diagnostics (ABS, SRS, transmission)
  • Repair Reports with verified fixes
  • Smog check readiness
  • Free app (iOS & Android)
Check Price on Amazon
Advanced$180–$230

LAUNCH CRP123X OBD-II Scanner

by LAUNCH

A professional-grade handheld scanner that reads all four major systems (engine, transmission, ABS, SRS) with live data streaming and graphing.

  • Engine, transmission, ABS, SRS diagnostics
  • Live data stream & graphing
  • AutoVIN for vehicle identification
  • Free lifetime updates via Wi-Fi
Check Price on Amazon
Professional$350–$450

Autel MaxiCOM MK808S Diagnostic Tool

by Autel

Shop-level diagnostic tablet with bi-directional control, active tests, and full system coverage. Ideal for serious DIYers and small shops.

  • All-system diagnostics (25+ modules)
  • Bi-directional control & active tests
  • Oil reset, EPB, BMS, TPMS, injector coding
  • 7-inch touchscreen with Android OS
Check Price on Amazon

As an Amazon Associate, we earn from qualifying purchases. Prices are approximate and may vary.

Vehicles Affected (9)

AvalancheModerate

Unwanted ABS Activation Increasing Stopping Distance

2002-2006$100-$1,200220 reports
ExpressModerate

StabiliTrak and ABS False Activation from Wheel Speed Sensors

2008-2025$150-$4000 reports
300Critical

ABS Module Internal Failure

2011-2023$300-$1,2001,300 reports
FocusModerate

Rear Wheel Bearing Premature Failure (1st-Generation Mk1/Mk1.5)

2000-2007$250-$5002,200 reports
Sierra 1500Critical

Electronic Brake Control Module Failure

2014-2023$150-$1,500345 reports
PassportModerate

ABS Hydraulic Unit / Wheel Speed Sensor Faults Causing ABS Warning Lights and Loss of Anti-Lock Function

2000-2002$150-$1,2000 reports
Grand WagoneerCritical

Electronic Stability Control/ABS warning with wheel speed sensor or tone ring faults

2022-2024$250-$1,200120 reports
RioCritical

HECU Electrical Short / Engine Fire Risk

2012-2017$0-$0198 reports
370ZModerate

Brake Actuator Relay Failure

2009-2014$400-$1,200280 reports

Related Codes (8)

C0040Right Front Wheel Speed Sensor Circuit01315ABS Hydraulic Return Pump (VAG)01772Brake Light Switch (VAG)02250ABS Wheel Speed Sensor (VAG)C002487Electronic Brake Force Distribution FaultC0035Left Front Wheel Speed Sensor CircuitC0050Right Rear Wheel Speed Sensor CircuitC0051LF Wheel Speed Sensor Circuit Range/Performance

FAQ

What does C0045 mean?

C0045 stands for "Left Rear Wheel Speed Sensor Circuit." The left rear wheel speed sensor has a circuit fault.

What are the most common causes of C0045?

The most common causes of C0045 are: Failed sensor, Wiring damage from road debris, Corroded connector, Damaged tone ring, Bearing hub assembly failure. The specific cause varies by vehicle.

How much does it cost to fix C0045?

Repair costs for C0045 range from $100 to $1,500, depending on the vehicle and root cause.

Which vehicles are affected by C0045?

Au7o has documented C0045 across 9 vehicle models from 8 manufacturers: Chevrolet, Chrysler, Ford, GMC, Honda, Jeep, Kia, Nissan.

Sources (12)

  • videoYouTube Repair Video: Rear Wheel Bearing Replacement on Ford Focus
  • NHTSANHTSA RCSB-19V645: Product Safety Recall N192268490 Increased Brake Pedal Effort
  • NHTSANHTSA RMISC-20V055: Frequently Asked Questions for NonCompliance Recall N192268091
  • mediaLemon Law Aid: 2019 Chevy Silverado & GMC Sierra Electronic Brake Module Recall
  • mediaConsumer Reports: Chevrolet Silverado and GMC Sierra Pickups Recalled Again for Brake System
  • RecallNHTSA Recall 20V123000 - Nissan 370Z Brake Actuator Relay Issue
  • TSBNissan Technical Service Bulletin NTB14-041: Brake Actuator Relay Replacement Procedure
  • NHTSANHTSA Complaints - Avalanche ABS Issues
  • NHTSANHTSA Safety Recall SC284UB HECU Fuse Replacement
  • ForumRecall for HECU - Kia Optima Forums
  • ForumInterim Notice Safety Recall - Kia Forum
  • Forumr/JeepGrandWagoneer subreddit - owner discussions including ABS/ESC warning light and wheel speed sensor issues

Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.

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