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P0203 on VOLKSWAGEN TIGUAN

Cylinder 3 Injector A Circuit

NHTSA Reports
2
Severity
Medium
Most Affected
2018
Crashes / Fires
0 / 0
Source: NHTSA Complaints Database · SAE J2012
Last reviewed: Last updated:

Methodology: We combine code standards with complaint and reliability patterns, then review for clear, vehicle-first diagnosis steps.

Sources: SAE/OBD-II definitions, manufacturer service information, and public reliability reports (including NHTSA where applicable).

Limits: Guidance is informational and may not match every model-year or revision. Confirm with the official manual and diagnostics before replacing parts. For safety-critical or electrical work, use a qualified technician.

What P0203 Means on Your VOLKSWAGEN TIGUAN

P0203 is a diagnostic trouble code indicating: Cylinder 3 Injector A Circuit. This code relates to the fuel injection system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

2 VOLKSWAGEN TIGUAN owners have reported this issue to NHTSA across model years 2018. Most reports come from the 2018 model year. The most commonly reported component is Air Bags,Fuel/Propulsion System (50.0% of reports).

Real VOLKSWAGEN TIGUAN Owner Reports

Source: NHTSA Complaints Database

"Seat belt light on. Car went into limp mode while on the highway. Seat belt acted like it was loose. Went for scan and it pulled up diagnostic code P0203 which is Replace Fuel injector wiring harness. Saying Cylinder 3 circuit malfunction. Also threw code P050B."

— 2018 VOLKSWAGEN TIGUAN owner · AIR BAGS,FUEL/PROPULSION SYSTEM · Filed 05/14/2025

"On multiple occasions, subject vehicle displayed check engine light and epc light at random intervals, causing car to unexpectedly be limited to 4,000 rpm and unable to accelerate past 40mph."

— 2018 VOLKSWAGEN TIGUAN owner · POWER TRAIN,ELECTRICAL SYSTEM,ENGINE · Filed 03/23/2019

All reports filed by vehicle owners directly with the U.S. Department of Transportation.

📊 Complaint Trend by Model Year

2
'18

Common Causes on VOLKSWAGEN TIGUAN

Based on NHTSA complaint component analysis for this vehicle.

AIR BAGS,FUEL/PROPULSION SYSTEM 50%
POWER TRAIN,ELECTRICAL SYSTEM,ENGINE 50%

What To Do Next

  1. 1
    Check for recalls on YOUR VIN

    Go to nhtsa.gov/recalls and enter your VIN. If your vehicle is covered, repairs are free.

  2. 2
    Get a proper diagnosis

    A code alone doesn't tell you the exact failed part. A diagnostic at a shop ($50–$150) pinpoints the root cause before you spend money on parts.

  3. 3
    Compare repair quotes

    Get 2–3 quotes. Dealer vs. independent shop prices often differ 30–50% for the same repair.

Frequently Asked Questions

What does P0203 mean on a VOLKSWAGEN TIGUAN? ▾
P0203 indicates: Cylinder 3 Injector A Circuit. This is a fuel injection code. 2 VOLKSWAGEN TIGUAN owners have reported this to NHTSA.
What are the most common causes of P0203 on VOLKSWAGEN TIGUAN? ▾
Based on 2 NHTSA reports, the most commonly cited components are: Air Bags,Fuel/Propulsion System, Power Train,Electrical System,Engine. These percentages are based on the component field in owner complaints.
Is P0203 serious on my VOLKSWAGEN TIGUAN? ▾
Of 2 NHTSA reports for this code on VOLKSWAGEN TIGUAN, none involved a crash or fire. However, any diagnostic code should be evaluated by a qualified mechanic.
What should I do if my VOLKSWAGEN TIGUAN shows P0203? ▾
1) Check for recalls on your VIN at nhtsa.gov/recalls. 2) Get a professional diagnosis — a code alone doesn't identify the exact failed part. 3) Get 2-3 repair estimates to compare.

P0203 on Other Vehicles

→ All codes reported on VOLKSWAGEN TIGUAN