How to fix DPF warning, glow plug blinking and limp mode on Skoda Rapid 1.6 TDI (2014) Iamcarhacker

By Juraj · Last updated: March 29, 2026

This guide shows how to fix DPF warning, glow plug blinking and limp mode on Skoda Rapid 1.6 TDI (2014) by performing DPF regeneration and DPF adaptation/reset using diagnostic tool.

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Used tool in this guide

Supported vehicles

Vehicle
rapid-nh

Similar VAG vehicles with 1.6 TDI engines and DPF system

Video: How to do service DPF regeneration on VAG 1.6 TDI

This video shows how to service DPF regeneration on VAG 1.6 TDI using VAG guides functions on OBD2 scanner.

Technical overview

Item	Details
Vehicle	Skoda Rapid 1.6 TDI
Year	2014
System	Engine Control Module (ECU) / DPF
Procedure type	DPF regeneration + DPF adaptation/reset
Difficulty	Intermediate
Time required	~30–45 minutes
Prerequisites	Engine warm, diagnostic tool with guided functions

Step-by-step procedure

1. Read fault codes

From scan:

P245800 → Particulate filter regeneration duration (bank 1) → ACTIVE
U140000 → Low voltage (sporadic)
P060100 → Internal ECU checksum (sporadic)

👉 Key issue:

DPF-related fault active → blocks proper regeneration

2. Attempt DPF regeneration (diagnostic tool)

Navigate:

01 Engine → Guided Functions → DPF Regeneration

You will see warnings like:

regeneration should NOT be performed if faults are stored
ECU event memory contains entries

👉 You continued anyway (valid for testing)

3. Monitor regeneration live data

From your screenshots:

Before regen:

Calculated soot: ~24 g
Measured soot: ~2.09 g

After regen:

Calculated soot: ~23 g
Measured soot: ~0.62 g

Temperatures:

Before turbo: ~300–400°C
Before DPF: ~270–309°C
After DPF: up to ~408°C

👉 What this tells us:

Measured soot already LOW → DPF not actually clogged
ECU still thinks regen problem exists → software/adaptation issue

4. Regeneration result

Regeneration ended as FAILED
Fault code P245800 remained active
Check engine light could NOT be cleared

5. Key diagnostic insight

👉 This is NOT a clogged DPF problem
👉 This is DPF adaptation / learned values issue

6. Perform DPF reset (adaptation)

Navigate:

01 Engine → Guided Functions → 
Particulate Filter → Adapt Diesel Particle Filter Values

⚠️ Normally used AFTER replacing DPF
👉 but here used to reset incorrect ECU values

7. What scanner showed

Stored ash mass: ~4.1 g
After reset: 0.0 g

👉 ECU memory cleared → DPF treated as “new”

8. Results after reset

DPF light → OFF
Glow plug blinking → already gone during regen
Limp mode → DISABLED
Check engine → CAN NOW BE CLEARED

Additional Information & Compatibility Notes

Before using or purchasing any diagnostic tool for this procedure, always verify compatibility with your exact vehicle model, year and system configuration. Supported functions may vary depending on software version, hardware revision and regional limitations.

Measured vs calculated soot difference is critical

low measured soot = filter is physically OK
high calculated soot = ECU model problem

Regeneration can fail if:

active DTC present
ECU logic blocks completion

Resetting DPF values:

should normally be done after replacement
but can fix false DPF faults / incorrect learned values

If soot was actually high (>20g measured):

this method would NOT fix the issue

Alternative tools

Best VAG OBD2 scanners
Best Bi-Directional OBD2 scanners

Related guides & background information

Legal & safety notice

This procedure modifies vehicle system settings through the control module. Incorrect use may cause faults or warning lights. Always ensure the vehicle is secured and follow proper safety procedures.