Front-right ABS wheel speed sensor faults on a 1999–2004 Jeep Grand Cherokee WJ can accompany an ABS warning lamp, a missing right-front wheel-speed reading or unwanted ABS intervention during gentle braking. This guide covers the listed 4.0L inline-six and 4.7L V8 gasoline applications. Jeep’s factory diagnostic wording includes “Right Front Sensor Circuit Failure.” There is no universal engine P-code that proves this sensor has failed: the sensor, its wiring and the mechanical signal source must be distinguished before buying a replacement.
Intermediate: safe lifting and ABS diagnosis
1–2 hours for one accessible sensor, after diagnosis
$25–$70 for one aftermarket sensor; tools extra
Application and vehicle coverage
Front right means the passenger side on a left-hand-drive vehicle. The WJ Grand Cherokee is different from the Cherokee XJ and later Grand Cherokee generations. Check the VIN, original sensor reference, connector and lead routing before ordering. Engine size alone does not identify the correct corner.
| Vehicle / trim | Model years | Engine | Position / restrictions |
|---|---|---|---|
| Jeep Grand Cherokee WJ Laredo or Limited | 1999–2004 | 4.0L inline-six or 4.7L V8 gasoline | Front right; verify VIN and original part reference |
| Jeep Grand Cherokee WJ Sport | 2002 | 4.0L inline-six or 4.7L V8 gasoline | Front right |
| Jeep Grand Cherokee WJ Overland | 2002–2004 | 4.7L V8 gasoline | Front right |
| Jeep Grand Cherokee WJ SE | 2004 | 4.0L inline-six gasoline | Front right |
| Jeep Grand Cherokee WJ Special Edition | 2004 | 4.0L inline-six or 4.7L V8 gasoline | Front right |
These are the manufacturer’s ABS0007 catalog applications. The OE front-axle catalog covers 2WD and 4WD gasoline configurations, but match your drivetrain and axle arrangement before purchase. Export diesel/WG vehicles and modified axles are outside this guide’s established fitment. A left sensor or either rear sensor is a different purchase.
Featured replacement sensor
The supplied product is the A-Premium front-right ABS wheel speed sensor, part ABS0007, ASIN B01IA3JCF2. The selected variation is Front Passenger Side. The manufacturer lists one sensor, its wiring harness and a two-pin connector, with interchange reference 56041316AA. This is not a pair, hub assembly or ABS controller; do not assume a new mounting bolt is included.
View the front-right ABS sensor
Symptoms and diagnosis before replacement
Start with the ABS controller, called the CAB in Jeep service information. Record the complete fault description and whether it is current or intermittent. A basic engine-code reader can report no faults while the ABS controller still stores one. If communication fails, investigate controller power, connections and scan-tool coverage before treating the problem as a sensor failure.
| Finding | What to check next |
|---|---|
| Right Front Sensor Circuit Failure | Inspect the vehicle-side plug and sensor lead for corrosion, loose terminals, rubbing, an open circuit or a short. Follow the exact-year circuit chart for electrical testing. |
| Right-front speed drops out while the others agree | Inspect sensor seating, cable movement, the tone wheel and bearing condition. Compare live wheel speeds during a controlled test. |
| Fault appears over bumps or during turns | Look for a stretched lead, missing retainer or damaged wire where the harness moves with the knuckle. |
| Multiple wheel or supply faults | Investigate shared electrical causes and the full ABS fault list before replacing several sensors. |
The WJ sensor uses internal electronics, so a generic resistance test cannot establish whether it is working. Do not apply battery power directly or force oversized probes into its connector. Its air gap is fixed; adding shims or grinding the mounting face is not an adjustment procedure. Check the tires’ size and inflation, and inspect the mechanical signal source rather than treating every abnormal reading as an electrical failure.
Keep a short record of the symptom, driving conditions and scan results. “ABS light after suspension work” suggests a different starting point from a permanently open circuit. If you cannot separate wiring damage from a failed sensor using the factory tests, pay for diagnosis before purchasing parts.
Tools, parts and supplies
The following tool choices match the stated descriptions. Verify your actual fastener heads before starting. The small torque wrench and sensor socket share a 1/4-inch drive; the wheel tools share a 1/2-inch drive, so those combinations need no drive adapter. Tool torque ranges are capacities, not instructions to tighten every fastener to that value.
| Tool or Supply | Exact Product | Product Link | Purpose and Selection Check |
|---|---|---|---|
| Floor jack — required | ARCAN A20003, 3-ton steel floor jack | View floor jack | Check reach, lifting height and load rating. Use the factory floor-jack contact points; the emergency jack’s axle location is a different instruction. |
| Jack stands — required | BIG RED T43002A, double-locking 3-ton pair | View stand pair | Capacity is for the pair. Confirm adequate height and full saddle contact at the approved frame-rail support points. |
| Wheel chocks — required | Fasmov solid-rubber wheel chocks, two-pack with handles | View rubber chocks | Block both directions of the grounded wheels. Buy two packs if the lifting setup requires four chocks. |
| Small ratchet — required | TEKTON SRH11006, 1/4-inch-drive 6-inch ratchet | View small ratchet | Use controlled hand force at the sensor bolt. Its drive matches the sensor socket. |
| Sensor socket — confirm size first | CRAFTSMAN CMMT43495, 1/4-inch-drive 5/16-inch 6-point shallow socket | View 5/16-inch socket | The WJ passenger-side demonstration uses 5/16 inch. Confirm the actual bolt head, particularly if hardware has been replaced. |
| Sensor torque wrench — required | TEKTON TRQ50402, 1/4-inch drive, 20–200 in-lb | View inch-pound torque wrench | Matches the small socket and includes the 106–124 in-lb sensor setting. Do not confuse inch-pounds with foot-pounds. |
| Wheel socket — confirm size first | TEKTON SHD23119, 1/2-inch-drive 19 mm 6-point deep socket | View 19 mm socket | The WJ demonstration uses 19 mm wheel nuts. Check aftermarket nuts, swollen caps and wheel recess clearance. |
| Breaker bar — required | TEKTON SBH00224, 1/2-inch-drive 24-inch breaker bar | View breaker bar | Matches the wheel socket. Loosen wheel nuts with the tire grounded; use a torque wrench for final tightening. |
| Wheel torque wrench — required | TEKTON TRQ52403, 1/2-inch drive, 40–300 ft-lb | View wheel torque wrench | Matches the wheel socket and covers the cited 85–115 ft-lb wheel specification. It is unsuitable for the much smaller sensor-bolt setting. |
| ABS diagnostic capability — required | Autel MaxiCOM MK808S diagnostic tablet | View ABS-capable scanner | Confirm exact model-year WJ CAB/ABS access and individual wheel-speed live data with the supplier. Engine-code access alone is insufficient; paid diagnosis is an alternative. |
| Threadlocker — required | Loctite 242 blue medium-strength threadlocker, 6 mL | View Loctite 242 | Specified by the cited Jeep front-sensor procedure. Follow preparation/cure directions and keep it away from the sensor tip and connector. |
| Eye protection — required | DEWALT DPG82 Concealer safety goggles, clear lens | View safety goggles | Protect against falling grit while inspecting and cleaning around the knuckle. |
| Work gloves — recommended | Mechanix Wear Original MG-05-010, black, large | View work gloves | Choose a secure size; the linked variation is large. These are not electrical or chemical-protection gloves. |
| Clean cloth — as needed | Amazon Basics 16 × 12-inch microfiber cloths, 24-pack | View cleaning cloths | Wipe loose dirt from the mounting area without pushing debris into the opening. |
Conditional hardware: replace a worn/damaged mounting bolt and broken harness clips with VIN-matched OE-equivalent pieces. Check thread, length and retainer geometry; these are not generic substitutions. The standard sensor-only job does not require opening brake lines, draining fluid or removing the axle nut.
DIY versus shop cost
These are planning estimates for one front-right sensor, not current retail prices or a guaranteed quote. Corrosion, seized fasteners, harness repairs and bearing or tone-wheel work can increase both time and expense.
| Cost item | DIY estimate | Professional estimate |
|---|---|---|
| Replacement sensor | $25–$70 | $40–$150 |
| Threadlocker / minor supplies | $10–$25 | $10–$30 |
| Diagnosis | $0 if suitably equipped; paid diagnosis extra | $80–$180 if billed separately |
| Replacement labor | Your time | $100–$220 |
| Total with tools already owned | $35–$95, excluding paid diagnosis | $230–$580 including separate diagnosis |
| Tools if not owned | Allow $300–$650 for lifting/hand tools, plus $400–$700 for an ABS tablet if buying one | Usually incorporated into labor |
For an occasional repair, a professional diagnosis may be more economical than buying a scanner. Ask a shop to identify the failed corner, distinguish diagnostic time from installation labor, and explain whether the quote covers broken bolts or wiring. Replacing a healthy sensor will not cure a defective connector.
Step-by-step front-right replacement overview
1. Diagnose and compare the part
Record the ABS results and confirm the right-front corner. Match the new connector, mounting flange, lead and grommet positions to the old sensor. Photograph the right-side cable route before unclipping anything. Switch off the ignition and keep the keys away from anyone who could start the engine.
2. Lift, support and remove the wheel
Loosen the right-front wheel nuts slightly while grounded. Chock the wheels that stay on the ground. Position the floor jack at a frame-rail floor-jack point shown in the WJ factory lift diagram, Fig. 7; place rated stands at the approved frame-rail support locations and lower onto them. Keep every stand base flat and its saddle seated. Confirm stability from outside the vehicle before removing the wheel. Do not substitute the emergency jack’s axle contact location for this floor-jack setup.
3. Remove the old sensor
Remove its mounting bolt, gently release the sensor from the knuckle and free the lead from the brackets. Unlatch the electrical connector by its housing and remove the assembly. Protect the brake hose and adjacent wiring. If the sensor is seized, do not lever against the tone wheel or drill blindly into the bore; extraction can become a separate repair.
4. Inspect the opening and connector
Wipe away loose dirt without pushing it into the opening. Check the old sensor tip is complete, the mount is sound and the connector seal and latch are intact. Do not enlarge the bore or use the bolt to draw a misaligned sensor down. Resolve damaged wiring, missing retainers or a loose bearing before installation.
5. Install and tighten
Seat the replacement squarely. Jeep’s cited WJ front-sensor procedure specifies Mopar Lock N’ Seal or Loctite 242 on the mounting-bolt threads, replacement of a worn or damaged bolt, and 12–14 N·m (106–124 in-lb) tightening torque. Use the small torque wrench and follow the threadlocker directions. This is the front-sensor setting in the cited 2002 and 2004 service references; use the exact-year procedure if your hardware or axle differs.
6. Secure the right-side cable
Reconnect the plug and seat all harness grommets and retainers in their brackets. Keep the lead away from the tire, rotating components, sharp edges and heat. Check its slack through steering movement without twisting or pulling it taut. A cable that is secure with the wheels straight can still rub or stretch at full lock.
7. Refit the wheel
Clean the wheel-to-hub contact area, start the nuts by hand and snug them evenly in a crossing pattern. Lower safely and torque the nuts with the wheel wrench. The 2004 WJ owner manual specifies 85–115 ft-lb (115–156 N·m); confirm the specification for your model year and wheel hardware before driving. An impact wrench is not the final torque check.
8. Confirm the repair
Check the brake pedal and work area before moving. Clear recorded ABS faults after the cause is repaired, rescan and compare wheel-speed readings during a safe low-speed test. Use recording or a passenger to handle the scanner. Do not provoke an emergency stop or run driven wheels under power on stands. Recheck for returning faults and inspect the cable route after the test.
Repair video
This 1A Auto/TRQ demonstration shows the 1999–2004 WJ front passenger-side sensor. It helps locate the connector and harness retainers. Follow the factory lifting and torque guidance above; the replacement shown is a different brand.
Watch the demonstration on 1A Auto.
Common mistakes
Avoid confusing “Cherokee” with “Grand Cherokee,” front right with front left, or a single-sensor listing with a pair. Other frequent errors are buying before checking the harness, leaving out a cable clip, forcing a sensor into a dirty mount and mixing in-lb with ft-lb. A replacement sensor should fit without modifying its flange or connector. If it does not, stop and compare the application.
Frequently asked questions
Should I replace both front sensors?
Only replace a sensor that diagnosis identifies as faulty. Inspect the other side for similar age or damage issues, but these are not automatically replaced as a wear pair.
Does “passenger side” apply to right-hand-drive vehicles?
Use the physical front-right position. Passenger-side wording assumes a left-hand-drive vehicle; export configurations need their own catalog check.
Will replacing this sensor clear every ABS warning?
No. A circuit fault can originate in the harness, connector or controller, and a bad mechanical signal source can remain after replacement.
Do I need to bleed the brakes?
Normal sensor-only work does not open the hydraulic circuit. If a brake hose or line is damaged or disconnected, stop and follow the appropriate hydraulic repair and bleeding procedure.
What if the new sensor does not fix it?
Record the returning fault, compare wheel speeds and check the connector, harness routing, sensor seating and tone wheel. Do not buy another sensor without isolating the cause.
Sources and further reading
A-Premium ABS0007: specifications, OE interchange and trim/year catalog
Mopar front-axle catalog: left/right sensors and gasoline configurations
2002 Jeep factory front-sensor removal procedure
2004 Jeep factory front-sensor installation and tightening specification
Jeep factory sensor operation: fixed gap and resistance-test limitation
Jeep diagnostic chart: Right Front Sensor Circuit Failure
2003 WJ factory manual: floor-jack cautions and lift-point diagram
2004 WJ owner manual: wheel installation and wheel-nut torque
1A Auto/TRQ passenger-side demonstration and tool sizes