The valvetrain of the three cylinder 1.2 runs on a chain instead of a belt.
Applies to the engine AWY, AZQ, BMD and 4 more.
2002–2008. The fault list covers this generation and the engines in it. If the listing gives the exact version, pick it below.

Thomas doerfer / CC BY-SA 3.0
What to watch for
The list covers the generation, the engines and the transmissions. Once you pick the version, only the faults that apply to it stay.
The valvetrain of the three cylinder 1.2 runs on a chain instead of a belt.
Applies to the engine AWY, AZQ, BMD and 4 more.
The PD (pump injector) unit is held in the cylinder head by a single side bolt.
Applies to the engine AMF, ASZ, ATD and 5 more.
The internal springs of the flywheel tire, and the two discs knock against each other.
Applies to the engine ASZ, ATD, AXR and 2 more.
The PD injectors (on the 1.4, 1.9 and 2.0 TDI alike) are driven by the camshaft itself, against more than 2,000 bar.
Applies to the engine ASZ, ATD, AXR and 5 more.
The vanes of the variable geometry turbo are glued together by soot and oil arriving through the EGR.
Applies to the engine ATD, AXR, ASZ and 2 more.
The G62 sensor tells the engine control unit how hot the coolant is.
Applies to the engine AMF, ASY, ASZ and 22 more.
From the late nineties to around 2006, petrol engines used a secondary air pump to blow fresh air into the exhaust on a cold start, so the catalytic converter reaches operating temperature faster.
Applies to the engine AUB, BBY, BXW and 9 more.
The G28 sensor drops out as it heats up.
Applies to the engine AMF, ASZ, ATD and 5 more.
Engines and transmissions in this generation
A fault is often tied to the engine, not to the whole generation. You find the engine code in the registration document.
III · 2002–2008
The fault list opens on the version page.
56 versions
1.2 l · 1198 cm³
AZQ · BME · MQ150
1.2 12V
2002–2006 · 12V
1.2 l · 1198 cm³
AZQ · BME · MQ150
1.2 12V Reference
2002–2006 · 12V Reference
1.2 l · 1198 cm³
AZQ · BME · MQ150
1.2 12V Selection
2002–2006 · 12V Selection
1.2 l · 1198 cm³
AZQ · BME · MQ150
1.2 12V Signo
2002–2006 · 12V Signo
1.2 l · 1198 cm³
AZQ · BME · MQ150
1.2 12V Stella
2002–2006 · 12V Stella
1.2 l · 1198 cm³
BXV · BZG · MQ150
1.2 12V Reference
2006–2009 · 12V Reference
1.2 l · 1198 cm³
BXV · BZG · MQ150
1.2 12V Selection
2006–2009 · 12V Selection
1.2 l · 1198 cm³
BXV · BZG · MQ150
1.2 12V Trendstyle
2006–2009 · 12V Trendstyle
1.4 l · 1390 cm³
BBY · BKY · MQ150
1.4 16V 75hp Businessline
2002–2006 · Businessline
1.4 l · 1390 cm³
BBY · BKY
1.4 16V 75hp Reference
2002–2006 · Reference
1.4 l · 1390 cm³
BBY · BKY · MQ150
1.4 16V 75hp Reference
2002–2006 · Reference
1.4 l · 1390 cm³
BBY · BKY · MQ150
1.4 16V 75hp Signo
2002–2006 · Signo
1.4 l · 1390 cm³
BBY · BKY
1.4 16V 75hp Signo
2002–2006 · Signo
1.4 l · 1390 cm³
BBY · BKY · MQ150
1.4 16V 75hp Sport
2002–2006 · Sport
1.4 l · 1390 cm³
BBY · BKY · MQ150
1.4 16V 75hp Stella
2002–2006 · Stella
1.4 l · 1390 cm³
BBY · BKY
1.4 16V 75hp Stella
2002–2006 · Stella
1.4 l · 1390 cm³
BBY · BKY
1.4 16V 75hp Stylance
2002–2006 · Stylance
1.4 l · 1390 cm³
BKY · BBY · MQ150
1.4 16V 75hp Stylance
2002–2006 · Stylance
1.4 l · 1390 cm³
BXW · MQ150
1.4 16V 85hp 25 Edition I
2006–2009 · 25 Edition I
1.4 l · 1390 cm³
BXW · MQ150
1.4 16V 85hp Last Edition I
2006–2009 · Last Edition I
1.4 l · 1390 cm³
BXW · MQ150
1.4 16V 85hp Reference
2006–2009 · Reference
1.4 l · 1390 cm³
BXW · MQ150
1.4 16V 85hp Trendstyle
2006–2009 · Trendstyle
1.4 l · 1390 cm³
AUB · BBZ · MQ150
1.4 16V 100hp Sensation
2006–2009 · Sensation
1.4 l · 1390 cm³
AUB · BBZ · MQ150
1.4 16V 100hp Signo
2002–2006 · Signo
1.4 l · 1390 cm³
AUB · BBZ · MQ150
1.4 16V 100hp Sport
2002–2006 · Sport
1.4 l · 1390 cm³
AUB · BBZ · MQ150
1.4 16V 100hp Stylance
2002–2006 · Stylance
1.4 l · 1422 cm³
BNM
1.4 TDi 70hp Reference
2006–2009 · Reference
1.4 l · 1422 cm³
BNM
1.4 TDi 70hp Trendstyle
2006–2009 · Trendstyle
1.4 l · 1422 cm³
BNM
1.4 TDi Reference
2002–2006 · Reference
1.4 l · 1422 cm³
BMS · BNV
1.4 TDi 80hp 25 Edition II
2006–2009 · 25 Edition II
1.4 l · 1422 cm³
BMS · BNV
1.4 TDi 80hp Ecomotive
2006–2009 · Ecomotive
1.4 l · 1422 cm³
BMS · BNV
1.4 TDi 80hp Freestyle
2006–2009 · Freestyle
1.6 l · 1598 cm³
BTS
1.6 16V 25 Edition II
2006–2009 · 25 Edition II
1.6 l · 1598 cm³
BTS
1.6 16V Freestyle
2006–2009 · Freestyle
1.6 l · 1598 cm³
BTS
1.6 16V Last Edition II
2006–2009 · Last Edition II
1.6 l · 1598 cm³
BTS
1.6 16V Sportstyle
2006–2009 · Sportstyle
1.8 l · 1781 cm³
BJX · BKV
1.8 20VT FR
2002–2006 · 20VT FR
1.8 l · 1781 cm³
BBU
1.8 20VT Cupra
2002–2006 · 20VT Cupra
1.9 l · 1896 cm³
ASY · MQ150
1.9 SDi Reference
2002–2006 · Reference
1.9 l · 1896 cm³
ASY · MQ150
1.9 SDi Signo
2002–2006 · Signo
1.9 l · 1896 cm³
ASY · MQ150
1.9 SDi Stella
2002–2006 · Stella
1.9 l · 1896 cm³
ATD · AXR
1.9 TDi 100hp 25 Edition II
2006–2009 · 25 Edition II
1.9 l · 1896 cm³
ATD · AXR
1.9 TDi 100hp Businessline
2002–2006 · Businessline
1.9 l · 1896 cm³
ATD · AXR
1.9 TDi 100hp Freestyle
2006–2009 · Freestyle
1.9 l · 1896 cm³
ATD · AXR
1.9 TDi 100hp Reference
2002–2006 · Reference
1.9 l · 1896 cm³
ATD · AXR
1.9 TDi 100hp Sensation
2006–2009 · Sensation
1.9 l · 1896 cm³
ATD · AXR
1.9 TDi 100hp Signo
2002–2006 · Signo
1.9 l · 1896 cm³
ATD · AXR
1.9 TDi 100hp Sport
2002–2006 · Sport
1.9 l · 1896 cm³
ATD · AXR
1.9 TDi 100hp Sportstyle
2006–2009 · Sportstyle
1.9 l · 1896 cm³
ATD · AXR
1.9 TDi 100hp Stella
2002–2006 · Stella
1.9 l · 1896 cm³
ATD · AXR
1.9 TDi 100hp Stylance
2002–2006 · Stylance
1.9 l · 1896 cm³
ASZ · BLT
1.9 TDi 130hp FR
2002–2006 · FR
1.9 l · 1896 cm³
ASZ · BLT
1.9 TDi 130hp Signo
2002–2006 · Signo
1.9 l · 1896 cm³
ASZ · BLT
1.9 TDi 130hp Sport
2002–2006 · Sport
1.9 l · 1896 cm³
BPX · BUK
1.9 TDi 160hp Cupra
2002–2006 · Cupra
2.0 l · 1984 cm³
AZL · BBX
2.0 Sport
2002–2006 · Sport
Neighbouring generations
III (6L). If the listing is from the changeover year, look at the neighbour too.
Common questions
2002–2008. The changeover year can fall in two generations. If the listing is from that year, look at the neighbour too.
No. It depends on the engine and the transmission too.
The fault list is.
We write the descriptions, and we put the source next to them. A person reviews them before they go out. They are still information, not a technical expert opinion.