P269D OBD-II: Exhaust Aftertreatment Glow Plug Control Circuit Low
P269D Severity
Will P269D go away on its own?
Once the vehicle's onboard system no longer detects the issue, most codes will disappear on their own. If your vehicle still has this code, however, it should be properly diagnosed to avoid a more serious problem.
For a proper diagnosis, RepairPal Certified shops have the equipment, tools, and expertise.
Moderate severity codes might not threaten the vehicle's safety or functionality immediately, but you should still get it diagnosed within a reasonable time frame to keep your car running well.
What causes OBD-II fault code P269D?
Diesel Exhaust Fluid (DEF) is used to assist in converting leftover exhaust particles to harmless gases. In order to burn off those particles, the temperature of the exhaust system needs to increase. the injection of DEF Fluid into the exhaust stream brings Diesel Particulate Filter (DPF) up to temperature. The system is then able to convert harmful NOx to Nitrogen, Carbon Dioxide, and water. The Glow Plug keeps the DEF from freezing in extremely cold temperatures. If the glow plug fails to operate as requested, code P269D will be stored.
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OBD II Fault Code
- OBD II P269D
OBD-II Code Decreased engine performance is defined as a Exhaust Aftertreatment Glow Plug Control Circuit Low
Diesel Exhaust Fluid (DEF) is used to assist in converting leftover exhaust particles to harmless gases. In order to burn off those particles, the temperature of the exhaust system needs to increase. the injection of DEF Fluid into the exhaust stream brings Diesel Particulate Filter (DPF) up to temperature. The system is then able to convert harmful NOx to Nitrogen, Carbon Dioxide, and water. The Glow Plug keeps the DEF from freezing in extremely cold temperatures. If the glow plug fails to operate as requested, code P269D will be stored.
Decreased engine performance Symptoms
- Decreased engine performance
- DPF regeneration may not occur
Common Problems That Trigger the P269D Code
- Glow plug control module failure
- Glow plug relay failure
- Powertrain Control Module (PCM) failure
- Wiring issue
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