P1621, P1622 Chrysler Oxygen sensor
Fix P1621 P1622 Chrysler oxygen sensor code
Chrysler has issued a service bulletin #18-039-13 to address a P1621, P1622 Chrysler oxygen sensor code on the vehicle listed below:
2014 (LC) Challenger
2014 (LX) 300
2014 (LD) Charger
Do NOT replace oxygen sensor to fix the P1621, P1622 Chrysler trouble code!
The P1622 code translates as O2 Sensor Reference Voltage Circuit Low and the
P1622 Sensor Reference Voltage Circuit High 
Chrysler has identified a SOFTWARE flaw that can cause these codes to set even though the oxygen sensors are performing normally. The fix is a reflash with updated software.
If you replace the oxygen sensors, the codes with reoccur.
Get the software update to fix P1621, P1622 Chrysler oxygen sensor code
Chrysler dealers and some independent repair shop can perform the software update. This service bulletin is NOT a recall, so you will have to pay for the update. Expect to pay approximately $150 to $225 for the update.
©, 2017 Rick Muscoplat
Posted on by Rick Muscoplat
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