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P0204 on Volkswagen ID.4

Injector Circuit Malfunction - Cylinder 4

Factory diagnostic protocol and troubleshooting wire for fault code P0204 specifically for the Volkswagen ID.4 (2021–2026, Single RWD (201HP) / Dual Motor AWD ID.4 GTX (295HP / 77 kWh)).

Verified OEM Telemetry & Field Repair Tree
Volkswagen ID.42021–2026
Volkswagen ID.4
EV • Single RWD (201HP) / Dual Motor AWD ID.4 GTX (295HP / 77 kWh)
Reliability
Sensor Voltage Ref
0.1V – 5.0V Ref
ID.4 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 - $550 (DIY: $40 - $180)
Parts & Labor DIY
Check P0204 On Another Volkswagen Model:
Volkswagen JettaVolkswagen TiguanVolkswagen AtlasVolkswagen Golf GTIVolkswagen ID.4
Diagnose P0204 on Specific ID.4 Model Year:
2025 ID.4 P02042024 ID.4 P02042023 ID.4 P02042022 ID.4 P02042021 ID.4 P02042020 ID.4 P02042019 ID.4 P02042018 ID.4 P02042017 ID.4 P02042016 ID.4 P02042015 ID.4 P02042014 ID.4 P0204

1. Symptoms of P0204 on Volkswagen ID.4

When the Engine Control Module (ECM/PCM) on your Volkswagen ID.4 (Single RWD (201HP) / Dual Motor AWD ID.4 GTX (295HP / 77 kWh)) logs fault code P0204, drivers commonly observe:

Flashing CEL on Volkswagen ID.4 (Single RWD (201HP) / Dual Motor AWD ID.4 GTX (295HP / 77 kWh))
Engine vibration and sputtering on Volkswagen ID.4 (Single RWD (201HP) / Dual Motor AWD ID.4 GTX (295HP / 77 kWh))
Sluggish acceleration on Volkswagen ID.4 (Single RWD (201HP) / Dual Motor AWD ID.4 GTX (295HP / 77 kWh))
P0304 code on Volkswagen ID.4 (Single RWD (201HP) / Dual Motor AWD ID.4 GTX (295HP / 77 kWh))
Volkswagen ID.4 OBD-II Port Location
The 16-pin diagnostic connector is located Driver side footwell lower instrument interface. Plug in your scan tool to verify freeze-frame sensor values.

2. Most Likely Causes on Volkswagen ID.4

Historical warranty claims and technical repair bulletins for Volkswagen ID.4 point to the following failure distribution:

55%
Faulty Cylinder 4 fuel injector (Volkswagen OEM Part)
25%
Broken wiring harness (Volkswagen OEM Part)
12%
Loose connector lock (Volkswagen OEM Part)
8%
ECM driver fault (Volkswagen OEM Part)
* Source: Synthesized from NHTSA ODI field repair telemetry and verified OEM Technical Service Bulletin (TSB) repair tree frequency percentiles for Volkswagen ID.4.

3. Step-by-Step DIY Repair Guide for Volkswagen ID.4

01
Check Injector 4 Resistance

Measure resistance across pins (12–16 ohms). on the Volkswagen ID.4 equipped with Single RWD (201HP) / Dual Motor AWD ID.4 GTX (295HP / 77 kWh).

Required Tool: Multimeter
02
Verify Signal with Noid Light

Check that ECM pulse reaches the connector. on the Volkswagen ID.4 equipped with Single RWD (201HP) / Dual Motor AWD ID.4 GTX (295HP / 77 kWh).

Required Tool: Noid Light
03
Replace Cylinder 4 Injector

Replace the faulty injector with OEM unit. on the Volkswagen ID.4 equipped with Single RWD (201HP) / Dual Motor AWD ID.4 GTX (295HP / 77 kWh).

Required Tool: Socket Set, O-ring Lube
04
Clear Codes and Test

Clear DTC memory and confirm smooth operation. on the Volkswagen ID.4 equipped with Single RWD (201HP) / Dual Motor AWD ID.4 GTX (295HP / 77 kWh).

Required Tool: OBD-II Scanner
Recommended Parts & Testing Tools

Equipment for Diagnosing Volkswagen ID.4 (P0204)

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Direct-Fit Replacement Part

Volkswagen ID.4 OEM Replacement Sensor

4.7 / 5.0 (Verified Fit)

Direct-fit replacement assembly engineered to OEM tolerances for Volkswagen ID.4.

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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.

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Other Common Fault Codes on Volkswagen ID.4

Frequently diagnosed powertrain, emissions, and sensor trouble codes logged on the Volkswagen ID.4:

P0300Automotive
Random or Multiple Cylinder Misfire Dete...
View ID.4 Fix
P0420Automotive
Catalyst System Efficiency Below Thresho...
View ID.4 Fix
P0171Automotive
System Too Lean (Bank 1)...
View ID.4 Fix
P0128Automotive
Coolant Temperature Below Thermostat Reg...
View ID.4 Fix
P0455Automotive
Evaporative Emission Control System Leak...
View ID.4 Fix
P0101Automotive
Mass Air Flow (MAF) Sensor Circuit Range...
View ID.4 Fix

4. Volkswagen ID.4 P0204 FAQs

What causes code P0204 to trigger on a Volkswagen ID.4?

On the Volkswagen ID.4 (Single RWD (201HP) / Dual Motor AWD ID.4 GTX (295HP / 77 kWh)), P0204 is most frequently caused by Faulty Cylinder 4 fuel injector or Broken wiring harness.

Where is the OBD-II port located on my Volkswagen ID.4?

On the Volkswagen ID.4, the 16-pin DLC diagnostic connector is located Driver side footwell lower instrument interface. Plug in any standard OBD-II scanner with the ignition in the ON position to read freeze-frame parameters.

Can I safely drive my Volkswagen ID.4 with code P0204?

No. Cylinder 4 is disabled, causing rough running and unburned fuel delivery issues. Given that P0204 carries a Critical severity rating, we advise avoiding heavy towing or aggressive throttle inputs until sensor readings are verified.