Suzuki 1.3, 1.5 and 1.6 de gasolina (serie M: M13A, M15A and M16A)Catalytic converterLambda sensor
Faulty catalytic converter and lambda sensors on the 2005-2010 Swift (engine warning light) on the 1.3, 1.5 and 1.6 gasolina (serie M)
Why this rating?
Medium severity: It can leave you stranded or get worse if ignored, without destroying the engine.
Frequency common: Gebrauchtwagenberater.de treats it as a weak point of the 2005-2010 Swift and, among the testimonies for the 125 hp 1.6 VVT on fiches-auto.fr, the lambda sensor is the most repeated complaint: at least five owners cite it (at 60,000, 69,000, 76,000, 110,000 and 146,000 km) and another mentions a second dead catalytic converter at 150,000 km. There are no failure statistics, only these two sources, so the assessment rests on testimonies.[1][2]
Symptoms
- Gebrauchtwagenberater.de identifies the engine light coming on as the sign of catalytic converter failure; 1.6 owners attribute it to the second lambda sensor or to code P0420.[1][2]Engine warning light: other faults that cause it · Garage soon
- Several 1.6 testimonies mention an engine or emissions warning that keeps coming back, sometimes without the car behaving any differently on the road.[2]Pollution control faulty: other faults that cause it · Garage soon
Why it happens
Gebrauchtwagenberater.de states that the Swift's catalytic converter wears out at around 50,000 km and that on the 1.6 Sport it forms a single piece with the exhaust manifold, so they are replaced together.[1]
In the 1.6 testimonies the cause that keeps coming up is the lambda sensor; one owner says he removed it and cleaned it. Another mentions code P0420.[2]
If it is not repaired: Beyond the engine light, gebrauchtwagenberater.de warns that replacing the catalytic converter and manifold together on the Swift Sport can be expensive. One owner says the car kept running normally with the faulty sensor.[1][2]
Affected cars and years
The gebrauchtwagenberater.de warning covers the whole 2005-2010 Swift generation (1.3, 1.5 and 1.6), but the most repeated testimonies concern the 125 hp 1.6; on the 1.3 there are only isolated mentions of the catalytic converter. On the 2010-2017 Swift with the 136 hp 1.6, the testimonies on fiches-auto.fr record no sensor failures.[1][2][3]
| Version | Years | Codes |
|---|---|---|
| 1.6 M16A 107-125 CV (Swift Sport, SX4, Sedici and Grand Vitara, 2005-2009) | 2005–2009 | M16A |
Models fitted with the affected versions
Fiat
- Fiat Sedici2006–2014
Suzuki
- Suzuki Swift III2005–2010
- Suzuki SX42006–2014
- Suzuki Grand Vitara II2005–2015
How much it costs to repair
Includes: Lambda sensor, or catalytic converter (on the Sport, integrated with the exhaust manifold), plus labour.[1]
There are no published quotes in Spain for this repair; gebrauchtwagenberater.de calls it potentially expensive on the Sport, without giving a figure.
Prices in Spain, including VAT. A workshop hour costs on average €38–66 at independent garages and €77–134 at dealerships in Spain, depending on the region and the brand. How we calculate costs
How to check for it before buying a used car
- Connect an OBD reader before buying a 2005-2010 Swift to rule out stored codes (one of the owners cites P0420) and ask for the history of the lambda sensor and the catalytic converter.[2]
- On a Swift Sport, ask whether the catalytic converter has already been replaced together with the exhaust manifold: it is the most expensive repair for this fault.[1]
- Check that the engine light goes out after starting and does not come back after a long drive.
Parts needed
The part or kit that fixes this fault, according to the sources.
Lambda sensor (upstream and downstream of the catalytic converter)[2]
It measures the oxygen in the exhaust gases so that the control unit can adjust the mixture and monitor the catalytic converter; 1.6 owners talk about a second sensor, the one downstream of the catalytic converter.
Catalytic converter with exhaust manifold (Swift Sport)[1]
On the 1.6 Sport the catalytic converter and manifold are a single piece, and the whole assembly is replaced.
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How to prevent it
Recalls, campaigns and claims
As of 8 October 2026, we have no record of recalls, campaigns or extended manufacturer warranties for this fault. Check with an official dealer using the chassis (VIN) number: they will tell you whether the car has any outstanding campaign.
What owners say
Frequently asked questions
Does the Suzuki Swift 1.6 Sport have catalytic converter problems?
According to gebrauchtwagenberater.de, the catalytic converter of the 2005-2010 Swift often fails at around 50,000 km and, on the Sport, it is integrated with the exhaust manifold, so they are replaced together.[1]
Why is the engine light on in my Swift 1.6?
Among the 1.6 testimonies on fiches-auto.fr, the cause that comes up most is the lambda sensor. An OBD reader shows the code (one owner cites P0420) and lets you decide which part to check before replacing anything.[2]
Does the same happen to the 136 hp Swift Sport (2012-2017)?
The testimonies for the 2010-2017 Swift on fiches-auto.fr record no sensor failures on the 1.6 engines, although the sample is small.[3]
What can you do now?
We will put you in touch with a partner only if you authorise it in the form.
Other 1.3, 1.5 and 1.6 gasolina (serie M) faults
- Medium severityFrequency: RareOtherAccessory belt tensioner pulley on the Grand Vitara 1.6 and Jimny 1.3 (2010 campaign)In 2010 Suzuki recalled the Jimny 1.3 and the Grand Vitara (1.6 included) because of the tensioner pulley for the power steering pump belt, whose plastic coating could come off and cause noise and, in the worst case, the belt to slip off.
- Medium severityFrequency: RareFuelFuel hose damaged by rubbing on the Swift 1.3 and 1.5 (2005-2008)Gebrauchtwagenberater.de records a recall of the 2005-2008 Swift 1.3 and 1.5: the fuel hose can be damaged in its outer layer by rubbing against the throttle body. We have found only this source.
- Low severityFrequency: RareEmissions controlLoose catalytic converter substrate on the SX4 1.5 and 1.6 (2008 campaign)In April 2008 Suzuki recalled the 1.5 and 1.6 petrol SX4s built between January 2006 and December 2007 to inspect the catalytic converter, whose substrate could come loose and cause rattling noises and higher emissions. The inspection was free.
More faults of the catalytic converter on other engines and cars
- Critical severityFrequency: Rare1.6 GDI / T-GDIPiston and connecting rod damage from catalytic converter overheating in the naturally aspirated 1.6 GDIIn the US, Kia recalled the 2012-2016 Soul with the naturally aspirated 1.6 GDI: a catalytic converter that overheats can disturb combustion and damage pistons, with a risk of breaking a connecting rod and puncturing the block. We have not found an equivalent warning for this engine in European cars.
- Low severityFrequency: Occasional1.0 VVT-iFaulty lambda sensor (P0420 code) on the 1.0 VVT-iOn the 1.0 VVT-i (1KR-FE) in the Aygo, C1 and 107/108, the lambda sensor, especially the one upstream of the catalytic converter, is documented as failing at high mileage and leaving code P0420 and the engine warning light. It is a cheap repair and does not damage the engine.
- Low severityFrequency: Rare1.6 16v HR16DE / H4MNo documented pattern of chain, catalytic converter or coil failuresUnlike other turbo engines from the same alliance, the sources consulted do not document a pattern of timing chain, catalytic converter or ignition coil failures for this naturally aspirated block: across more than 100 combined accounts, these sections appear empty or, at most, with an isolated case.
- Medium severityFrequency: OccasionalJeep Wrangler JLGearbox wiring harness with insufficient clearance from the catalytic converterTwo British campaigns from 2020 (V78 and W19) asked for the gearbox wiring harness of 664 and 547 Wranglers built between October 2017 and January 2020 to be checked, because it sat too close to the catalytic converter. It is inspected and repositioned, or replaced if the heat has damaged it.
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Sources
Every fact on this page links to its source. If you find an error, let us know.
- Suzuki Swift MK4 MZ 2005-2010: Probleme und SchwachstellenGebrauchtwagenberater.de · Motoring press · consulted 8 October 2026 · in German
- Fiabilité et pannes Suzuki Swift (2005-2010)Fiches-auto.fr · Owners' forum · consulted 8 October 2026 · in French
- Fiabilité et pannes Suzuki Swift 2 (2010-2017)Fiches-auto.fr · Owners' forum · consulted 8 October 2026 · in French