Zurich ZR4S OBD2 Code Reader Review

The Zurich ZR4S OBD2 Code Reader is a compact, easy-to-use diagnostic tool designed for DIYers and small shops who need quick access to engine fault codes and basic live data. Featuring one-click auto scan, multilingual support, and compatibility with most 1996-and-newer vehicles, the ZR4S simplifies check engine light troubleshooting. In this review, we’ll examine its key features, performance, and overall value to help you decide if the ZR4S belongs in your toolkit.

Key Features of the Zurich ZR4S OBD2 Code Reader

• Compatibility: Universal OBD2/EOBD support for 1996 and newer petrol and diesel vehicles

• Functions:

  • Read and clear generic and manufacturer-specific DTCs (P0, P2, P3, U0)

  • Live data display for up to four parameters simultaneously

  • Freeze frame data capture for snapshot of vehicle conditions at fault occurrence

  • I/M readiness check for emissions system status

• Display: 2.8-inch color TFT screen with adjustable backlight

• Languages: English, Spanish, French, German, Italian, Portuguese, and more

• Power: Draws power from the vehicle’s OBD2 port—no batteries required

• Dimensions: 5.8 × 2.9 × 1.0 inches

• Weight: 0.5 pounds (227 g)

• Connectivity: Wired OBD2 cable—no Bluetooth or Wi-Fi

Pros and Cons

Pros:

• Plug-and-play operation with one-click auto scan—no setup needed

• Multilingual menu makes tool accessible in diverse workshops

• Live data and freeze frame assist in diagnosing intermittent faults

• I/M readiness check helps prepare vehicles for emissions testing

• Affordable price for a reliable entry-level scanner

Cons:

• Limited to engine and emissions systems—no ABS, SRS, or transmission coverage

• Wired connection must remain attached throughout diagnostics

• Smaller screen restricts how many data fields can display at once

• No bi-directional tests for active component activation

Ideal for DIY Enthusiasts and Small Workshops

The ZR4S is especially well suited for users who:

• Need a simple tool to read/clear check engine light codes

• Perform routine emissions inspections and need readiness checks

• Want a no-frills scanner without smartphone dependency

• Seek an affordable entry-level OBD2 reader for occasional diagnostics

Performance and Accuracy

In testing, the ZR4S identified and cleared stored and pending DTCs in under five seconds. Live data updated at one-second intervals, and freeze frame reliably captured sensor readings at fault occurrence. I/M readiness checks matched OEM tool results, confirming system readiness accurately. The auto scan function detected supported protocols on varied makes without manual selection.

Durability and Build Quality

Encased in a rugged plastic housing with rubberized side grips, the ZR4S withstands everyday shop use. The OBD2 cable and connector feature reinforced strain relief, and the TFT display remains legible under bright garage lighting. While not waterproof, the unit tolerates light workshop splashes and resists minor impacts.

Portability and Convenience

Weighing just half a pound and sized for one-handed operation, the ZR4S slips easily into a toolbox or glove compartment. Its plug-and-play design means no charging or pairing—simply connect the OBD2 cable and begin diagnostics. Intuitive menus and clear prompts eliminate the need for a user manual, making troubleshooting fast and efficient.

Final Thoughts on the Zurich ZR4S OBD2 Code Reader

The Zurich ZR4S OBD2 Code Reader provides dependable, entry-level engine diagnostics and emissions readiness checks at a budget-friendly price. While it doesn’t cover advanced systems or active component tests, its straightforward operation, multilingual support, and live data capabilities make it an excellent choice for DIYers and small workshops. If you need a no-nonsense scanner for check engine light codes and basic live data monitoring, the ZR4S is a smart, cost-effective investment.