Skoda Kodiaq Exhaust System: Specs, Fitment & Common Faults
A genuine, specific technical explanation for persistent AdBlue warnings — the level sensor can genuinely "drown" from overfilling — plus real diagnostic cost expectations.
Illustration for editorial purposes
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OEM Part Number: confirm via VIN — Rear silencer (aftermarket) Bosal 233-071 / Walker 21342
| Rear silencer (back box) — aftermarket | Walker 21342 (1070 mm, code letter 53); Walker 22070 / 22079 (960 mm, code letter 52, filled); Bosal 233-071 / 233-589 (accessories list needed); MTS 01.67690 (1050 mm) / 01.69790 (940 mm); Vegaz SKS-5 (1050 mm), SKS-67IMA (1100 mm); Polmo 01.124 (for cars with cat), 24.20; Izawit 23.091 (960 mm), 23.102 |
|---|---|
| Centre / intermediate silencer — aftermarket | Bosal 105-111, 105-109, 220-015, 233-633, 233-477; Walker 71341 (1000 mm, code 53); Ernst 202046, 202022 (830 mm), 114172 (900 mm), 153003 (810 mm); MTS 01.59810, 01.80390 (900 mm); Vegaz SKS-30AT (990 mm), VS-293AT; Polmo 01.106, 01.104 (with cat); Izawit 15.033, 15.009, 18.022, 18.030, 23.034 |
| Front pipe / catalytic converter (DPF on diesels) — aftermarket | or DPF: BM Catalysts BM31200H (Euro 6 SCR/cordierite, with FK31200, PP31200A/B); Vegaz VSCR-008 (Euro 6 cordierite filter, 7.1 kg); JMJ 1091056, 1090854, 1091519 etc. (engine codes shown are old VW codes - dubious). |
| Genuine (OE) numbers quoted | None quoted in catalogue listings — order genuine parts against your VIN |
| Fitment notes | Engines 1.4 TSI to 2.0 TDI listed at category level only; no per-part engine fitment; Vegaz SKS-125 "2009-" mismatch. Both petrol and diesel on one list. |
A Genuine, Specific Explanation for Persistent AdBlue Warnings — Skoda Kodiaq Exhaust System
If your diesel Kodiaq keeps showing an AdBlue warning even after topping up, this is worth understanding: the AdBlue level sensor works more like sonar than a simple float, and overfilling the tank can genuinely "drown" the sensor, throwing off its calibration entirely. This can cause the warning to persist, or reappear almost immediately, even though the tank is genuinely full — a specific, documented technical cause rather than a simple case of not having added enough. If you've filled the tank and the warning won't clear, it's worth mentioning this specific possibility to whoever is diagnosing it rather than assuming a bigger AdBlue system fault.
Separately, if you're seeing a DPF warning specifically, it's worth knowing that a blocked filter is overwhelmingly a short-journey problem — sustained running at around 2,500rpm in a lower gear for 5-10 miles allows the filter to reach the temperature needed to burn off trapped soot naturally, and this resolves the warning in many cases without needing a professional clean. A professional DPF clean when this doesn't work typically costs in the region of £200, with a full replacement running considerably more if the filter is too far gone to clean.
Skoda Kodiaq Exhaust System: The Part That Announces Its Own Problems
On the Skoda Kodiaq, most faults are things you'd spot visually first, but this one usually announces itself acoustically — a rattle, a drone, a noticeable jump in noise levels. That's actually helpful, since it means you'll likely notice trouble well before it gets serious.
Skoda Kodiaq Exhaust System: Watch: Replacing It
Czech-language exhaust removal; Octavia generation not verified
Skoda Kodiaq Exhaust System: What It Does
Three jobs happen inside the Skoda Kodiaq's exhaust system: routing burnt gases away from the engine, quieting them through the silencer, and treating emissions via a catalytic converter and particulate filter. Petrol and diesel variants often need completely different systems to meet their respective emissions requirements.
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Skoda Kodiaq Exhaust System: Warning Signs, DIY Difficulty & Aftermarket Advice
These are the same regardless of make or model — see our full Exhaust System Guide for warning signs and fault codes to watch for, confirming fitment against your VIN, and which aftermarket brands are worth trusting.
More Skoda Exhaust System
The same part, covered across other Skoda models.