MazicBay Diagnostics
MAZICBAYDiagnostics
FTC Reader Disclosure: When you purchase or register through links on our site, we may earn an affiliate commission at no extra cost to you. Read our Editorial & Advertising Policy.
U0073JeepJeep Cherokee HubAll Jeep U0073Critical Severity

U0073 on Jeep Cherokee

Control Module Communication Bus A Off

Factory diagnostic protocol and troubleshooting wire for fault code U0073 specifically for the Jeep Cherokee (2020–2026, 2.4L Tigershark MultiAir / 2.0L Turbo (270HP) / 3.2L Pentastar V6).

Verified OEM Telemetry & Field Repair Tree
Jeep Cherokee2020–2026
Jeep Cherokee
SUV2.4L Tigershark MultiAir / 2.0L Turbo (270HP) / 3.2L Pentastar V6
Reliability
Sensor Voltage Ref
0.1V – 5.0V Ref
Cherokee SAE Mode $01
ECU Network Bus
500 kbps CAN-FD
ISO 15765-4 Compliant
Drivability Status
Not Recommended
Critical urgency level
Est. Repair Cost
$150 - $850 (DIY: $40 - $200)
Parts & Labor DIY
Check U0073 On Another Jeep Model:
Diagnose U0073 on Specific Cherokee Model Year:

1. Symptoms of U0073 on Jeep Cherokee

When the Engine Control Module (ECM/PCM) on your Jeep Cherokee (2.4L Tigershark MultiAir / 2.0L Turbo (270HP) / 3.2L Pentastar V6) logs fault code U0073, drivers commonly observe:

StabiliTrak / Traction / ABS / Engine warning lights lit on Jeep Cherokee (2.4L Tigershark MultiAir / 2.0L Turbo (270HP) / 3.2L Pentastar V6)
Transmission shifting harshly or refusing to shift out of 2nd gear on Jeep Cherokee (2.4L Tigershark MultiAir / 2.0L Turbo (270HP) / 3.2L Pentastar V6)
No communication with TCM, ABS, or BCM on Jeep Cherokee (2.4L Tigershark MultiAir / 2.0L Turbo (270HP) / 3.2L Pentastar V6)
Engine may refuse to crank on Jeep Cherokee (2.4L Tigershark MultiAir / 2.0L Turbo (270HP) / 3.2L Pentastar V6)
Jeep Cherokee OBD-II Port Location
The 16-pin diagnostic connector is located Under driver side lower dash trim panel. Plug in your scan tool to verify freeze-frame sensor values.

2. Most Likely Causes on Jeep Cherokee

Historical warranty claims and technical repair bulletins for Jeep Cherokee point to the following failure distribution:

55%
Loose or corroded ground connection on transmission or frame (Jeep OEM Part)
25%
Faulty Transmission Control Module (TCM) or ABS module pulling bus down (Jeep OEM Part)
12%
Poor connection at large body-to-chassis pass-through harness connector (Jeep OEM Part)
8%
Aftermarket accessory (remote starter, GPS tracker, cheap OBD scanner) broadcasting invalid data (Jeep OEM Part)
* Source: Synthesized from NHTSA ODI field repair telemetry and verified OEM Technical Service Bulletin (TSB) repair tree frequency percentiles for Jeep Cherokee.

3. Step-by-Step DIY Repair Guide for Jeep Cherokee

01
Unplug All Aftermarket OBD-II Devices

Remove any aftermarket insurance dongles, GPS trackers, or scan tools plugged into the DLC port. on the Jeep Cherokee equipped with 2.4L Tigershark MultiAir / 2.0L Turbo (270HP) / 3.2L Pentastar V6.

Required Tool: None
02
Inspect Frame and Transmission Ground Straps

Inspect braided ground straps on engine and transmission. Clean all contact surfaces to bare metal. on the Jeep Cherokee equipped with 2.4L Tigershark MultiAir / 2.0L Turbo (270HP) / 3.2L Pentastar V6.

Required Tool: Wire Brush, Sockets
03
Perform Full Vehicle Network Topology Scan

Scan all modules on vehicle. Note which modules are online and which are offline to pinpoint the break in the network daisy-chain. on the Jeep Cherokee equipped with 2.4L Tigershark MultiAir / 2.0L Turbo (270HP) / 3.2L Pentastar V6.

Required Tool: Full-System OBD-II Diagnostic Scanner
04
Check Terminating Resistance (60 Ohms)

Verify 60 ohms across Pins 6 and 14 with battery disconnected. on the Jeep Cherokee equipped with 2.4L Tigershark MultiAir / 2.0L Turbo (270HP) / 3.2L Pentastar V6.

Required Tool: Multimeter
05
Clear All System DTCs & Road Test

Clear DTCs from all modules and road test to verify error-free network transmission. on the Jeep Cherokee equipped with 2.4L Tigershark MultiAir / 2.0L Turbo (270HP) / 3.2L Pentastar V6.

Required Tool: Scan Tool
Recommended Parts & Testing Tools

Equipment for Diagnosing Jeep Cherokee (U0073)

Prime Fast Delivery & Verified Fitment
Direct-Fit Replacement Part

Jeep Cherokee OEM Replacement Sensor

4.7 / 5.0 (Verified Fit)

Direct-fit replacement assembly engineered to OEM tolerances for Jeep Cherokee.

$45 – $95 Prime
Check Fitment on Amazon
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.

$29.99 Prime
View on Amazon
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 Jeep CherokeeVerified direct-fit pricing from Denso, Bosch, Motorcraft, and ACDelco on Amazon.
Find Parts on Amazon
* As an Amazon Associate, MazicBay earns from qualifying purchases. Prices & availability subject to change.

Other Common Fault Codes on Jeep Cherokee

Frequently diagnosed powertrain, emissions, and sensor trouble codes logged on the Jeep Cherokee:

4. Jeep Cherokee U0073 FAQs

What causes code U0073 to trigger on a Jeep Cherokee?

On the Jeep Cherokee (2.4L Tigershark MultiAir / 2.0L Turbo (270HP) / 3.2L Pentastar V6), U0073 is most frequently caused by Loose or corroded ground connection on transmission or frame or Faulty Transmission Control Module (TCM) or ABS module pulling bus down.

Where is the OBD-II port located on my Jeep Cherokee?

On the Jeep Cherokee, the 16-pin DLC diagnostic connector is located Under driver side lower dash trim 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 Jeep Cherokee with code U0073?

No. Bus is shut down due to excessive transmission errors, leaving vehicle in unpredictable limp mode. Given that U0073 carries a Critical severity rating, we advise avoiding heavy towing or aggressive throttle inputs until sensor readings are verified.