Powertrain, generic (extended)

P2C82 AIR System Pump Supply Voltage Circuit Bank 1

Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modeNo

P2C82 points to a fault in the supply voltage circuit of the bank 1 secondary air pump. Conventional pumps are switched on by a relay; pumps with their own electronics, like the brushless design in an FCA patent, receive a feed and can judge whether the voltage arriving there is plausible. No manufacturer documents P2C82 publicly; CARB demands that all electrical secondary air components be checked for circuit faults. Common causes are the high-current fuse, a corroded or loose connector, a damaged feed or ground wire and a relay with burnt contacts; heavy voltage dips during cranking may contribute. Without a proper feed the pump stays off, cold-start emissions rise and the secondary air readiness test fails. P0418 covers the relay control circuit, P2445 a pump that does not deliver.

Likely causes

Blown high-current fuse for the pump
Relay with burnt or sticking contacts
Corroded or loose pump connector
Damaged feed or ground wire to the pump

Symptoms

  • Check engine light
  • No pump noise for the first minute after a cold start
  • Secondary air readiness incomplete

Repair estimate

DifficultyEasyDIY possible
Parts and labour€10–300
Time0.3–1.5 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

secondary air injection pump b1wiring harnessecm

Related codes

P2C80P2C81P0418P2445

References: law.cornell.edu, patents.google.com, hella.com.