What goes wrong
On affected vehicles, the valve springs may fracture, leading to abnormal engine noise, misfires, and potentially severe internal engine damage if left unaddressed. This typically manifests as a sudden loss of power or a loud ticking/knocking sound from the engine bay.
Symptoms to watch for
- Misfire P0300, P0301, P0302, P0303, P0304
- Rough idle
- Lack of power
- Check Engine Light (CEL) illumination
- Loud ticking or knocking noise from engine
Root cause
Improperly manufactured valve springs that can prematurely fatigue and fracture, leading to valve train failure.
Permanent fix
- Replacement of all valve springs with updated design valve springs and inspection of cylinder heads and valves for damage.
- In cases of severe damage, engine replacement may be required. However, the recall specifies inspection and repair/replacement of affected components.
Related recalls / TSBs
FAQ
What causes valve spring recall (fa20)?
Improperly manufactured valve springs that can prematurely fatigue and fracture, leading to valve train failure.
How much does it cost to fix?
National average $0–$0.
Is this a DIY repair?
Difficulty 5/5. Replacement of all valve springs with updated design valve springs and inspection of cylinder heads and valves for damage.
What are the symptoms?
Misfire P0300, P0301, P0302, P0303, P0304; Rough idle; Lack of power; Check Engine Light (CEL) illumination; Loud ticking or knocking noise from engine