DTC C1234 Jeep
Secondary Air Injection (AIR) Solenoid Control Circuit
Secondary Air Injection (AIR) Solenoid Control Circuit
Description
The system voltage is between 9-18V. The ignition is ON. These DTCs run on a 250 ms loop. DTCs P0412 and P0418 run continuously when the above conditions are met. The ECM determines that the actual and expected states of the AIR solenoid and AIR pump relay control circuits do not match. DTCs P0412 or P0418 set when the above condition exists for greater than 4 seconds.
Cause and Solution
AIR pump relay has failed AIR pump has failed AIR solenoid relay has failed AIR solenoid valve has failed Test or inspect the AIR solenoid valve outlet pipe and exhaust manifold for a restriction Air injection check valve
Video Guide
Diagnostic Info
- DTC Code: C1234
- Brand: Jeep