Powertrain
generic / SAE
P2259
Secondary Air Injection System Control B Circuit Low
The drive line for secondary air injection (AIR) control circuit B is stuck low. Secondary air is pumped into the exhaust manifold during cold start to speed up catalyst light-off.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number2 / 59
Possible causes
- Short to ground high
- Connector pins corroded - high contact resistance low
- Harness chafing through insulation low
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 80–600 €
- Estimated time: 0.5–2.5 h
- Component: secondary air injection pump
- Component: secondary air injection valve
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012