P2699 Possible Causes

• Faulty exhaust aftertreatment fuel injector
• Exhaust aftertreatment fuel injector harness is open or shorted
• Poor electrical connection in exhaust aftertreatment fuel injector circuit

How to Fix Code P2699

Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

Engine light on (or service engine soon warning light)

P2699 Meaning

The exhaust fuel additive injector assembly is mounted on the turbocharger outlet, and low-pressure fuel is supplied to the exhaust fuel additive injector assembly by the supply pump in the supply pump assembly. The exhaust fuel additive injector assembly adds fuel through a control signal from the Engine Control Module (ECM). This injector is used for two different controls: forced particulate matter (PM) regeneration and PM reduction.

P269A Possible Causes

• Faulty exhaust aftertreatment fuel injector
• Exhaust aftertreatment fuel injector harness is open or shorted
• Poor electrical connection in the exhaust aftertreatment fuel injector circuit

How to Fix Code P269A

Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

Illuminated engine light (or service engine soon warning light)

P269A Meaning

The exhaust fuel additive injector assembly is mounted on the turbocharger outlet, and low-pressure fuel is supplied to the exhaust fuel additive injector assembly by the supply pump in the fuel supply assembly. The exhaust fuel additive injector assembly adds fuel via a control signal from the Engine Control Module (ECM). This injector is used for two different controls: forced particulate matter (PM) regeneration and PM reduction.

P269B Possible Causes

• Faulty exhaust aftertreatment glow plug
• Exhaust aftertreatment glow plug circuit open or shorted
• Poor electrical connection in exhaust aftertreatment glow plug circuit

How to Fix Code P269B

Check the “Possible Causes” listed above. Visually inspect related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

Illuminated engine light (or service engine soon warning light)

P269B Meaning

The Powertrain Control Module (PCM) monitors the exhaust aftertreatment glow plug control circuit. The PCM sets the OBDII code when the exhaust aftertreatment glow plug control circuit falls outside factory specifications.

P269C Possible Causes

• Faulty exhaust aftertreatment glow plug
• Exhaust aftertreatment glow plug circuit open or shorted
• Poor electrical connection in exhaust aftertreatment glow plug circuit

How to Fix Code P269C

Check the “Possible Causes” listed above. Visually inspect related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

Engine light on (or service engine soon warning light)

P269C Meaning

The Powertrain Control Module (PCM) monitors the exhaust aftertreatment glow plug control circuit. The PCM sets the OBDII code when the exhaust aftertreatment glow plug control circuit falls outside factory specifications.

P269D Possible Causes

• Faulty exhaust aftertreatment glow plug
• Exhaust aftertreatment glow plug circuit open or shorted
• Poor electrical connection in exhaust aftertreatment glow plug circuit

How to Fix Code P269D

Check the “Possible Causes” listed above. Visually inspect related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

Illuminated engine light (or service engine soon warning light)

P269D Meaning

The Powertrain Control Module (PCM) monitors the exhaust aftertreatment glow plug control circuit. The PCM sets the OBDII code when the exhaust aftertreatment glow plug control circuit falls outside factory specifications.

P269E Possible Causes

• Faulty exhaust aftertreatment glow plug
• Exhaust aftertreatment glow plug wiring harness is open or short-circuited
• Poor electrical connection in the exhaust aftertreatment glow plug circuit

How to Fix Code P269E

Check the “possible causes” listed above. Visually inspect the wiring harness and related connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

Illuminated engine light (or service engine soon warning light)

P269E Meaning

The Powertrain Control Module (PCM) monitors the exhaust aftertreatment glow plug control circuit. The PCM sets the OBDII code when the exhaust aftertreatment glow plug control circuit falls outside factory specifications.

📌 Meaning of Code P269F

The code P269F indicates a problem with the exhaust gas post-treatment glow plug. This plug is part of the exhaust gas post-treatment system, often used in diesel engines to reduce emissions. The Powertrain Control Module (PCM) monitors this glow plug circuit and generates this code when the glow plug circuit falls outside normal specifications.

Glow plugs are crucial for maintaining optimal exhaust gas temperature to promote the proper functioning of the catalytic reduction system and other gas treatment devices. A malfunction of this plug can affect emission management and lead to reduced engine performance.

---

⚙️ Possible Symptoms

• ✅ Check Engine light on

• ⚠️ Increased pollutant emissions

• ⚠️ Loss of engine performance (reduced acceleration, difficulty starting)

• ⚠️ Deterioration of the exhaust gas post-treatment system

---

🛠️ Possible Causes of Code P269F

1. Faulty glow plug – The glow plug may be burnt out or damaged, preventing it from functioning properly.

2. Defective wiring harness – If the glow plug wiring harness is open (interrupted circuit) or short-circuited, it can prevent the plug from working correctly.

3. Poor electrical connection – Corroded or loose connections in the glow plug circuit can cause communication issues.

4. Electronic control problems – An issue in the control module (PCM) can lead to incorrect readings of the glow plug circuit.

---

🔧 How to Fix Code P269F

✅ Step 1: Visual Inspection of Wiring and Connectors

• Check the wiring harness: Look for damaged, cut wires, or areas where the harness may be short-circuited.

• Inspect the connectors: Check that no pins are broken, bent, or corroded. If signs of corrosion or damage are present, clean the connectors and ensure the connection is secure.

✅ Step 2: Testing the Glow Plug

• If you have a multimeter, check the glow plug’s resistance to ensure it is working correctly. High or infinite resistance may indicate that the plug is faulty and needs replacement.

✅ Step 3: Checking the Control Module

• If the plug and wiring are in good condition, it may be necessary to check the Powertrain Control Module (PCM) for electronic malfunctions.

✅ Step 4: Replacing Faulty Parts

• If the glow plug is faulty, replace it with a new one.

• If the wiring harness is damaged, repair or replace the harness.

• If the PCM has an issue, it may need to be reset or reprogrammed.

✅ Step 5: Resetting the Code

• Once you have repaired or replaced the faulty components, use an OBD-II diagnostic tool to clear the code and check if it reappears after one or two driving cycles.

---

📚 Conclusion

Code P269F is often related to a problem with the glow plug in the exhaust gas post-treatment system. It is essential to first check the wiring and connectors before testing or replacing the plug. If necessary, replacing the PCM or resetting the system may be performed. Ignoring this code can lead to reduced performance and higher emissions.

P26A0 Possible Causes

• Faulty exhaust aftertreatment glow plug
• Exhaust aftertreatment glow plug circuit open or shorted
• Poor electrical connection in exhaust aftertreatment glow plug circuit

How to Fix Code P26A0

Check the “Possible Causes” listed above. Visually inspect related wiring harnesses and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

Check engine light illuminated (or service engine soon warning light)

P26A0 Meaning

The powertrain control module (PCM) monitors the exhaust aftertreatment glow plug control circuit. The PCM sets the OBDII code when the exhaust aftertreatment glow plug control circuit falls outside factory specifications.

P26A1 Possible Causes

• Faulty exhaust aftertreatment glow plug
• Exhaust aftertreatment glow plug circuit open or shorted
• Poor electrical connection in exhaust aftertreatment glow plug circuit

How to Fix Code P26A1

Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

Illuminated engine light (or service engine soon warning light)

P26A1 Meaning

The Powertrain Control Module (PCM) monitors the exhaust aftertreatment glow plug control circuit. The PCM sets the OBDII code when the exhaust aftertreatment glow plug control circuit falls outside factory specifications.

The code P26A2 indicates a problem with the exhaust gas post-treatment glow plug control circuit. This typically involves an issue with the glow plugs located in the exhaust system after the catalyst, which are designed to reduce emissions by heating the exhaust gases before treatment.

Possible Symptoms:

• Engine light on (Check Engine Light).

• Service engine soon warning light.

• In some cases, there may be reduced performance, but this depends on the vehicle’s specifications.

Possible Causes of Code P26A2:

1. Faulty exhaust gas post-treatment glow plug:

   • The glow plug itself may be damaged or defective. This could be due to normal wear, internal malfunction, or a short circuit.

2. Open or shorted wiring harness:

   • The wiring connecting the glow plug to the control module (PCM) may be cut, damaged, or shorted, preventing the glow plug from functioning properly.

3. Poor electrical connection in the circuit:

   • The connectors or connection pins may be corroded, improperly inserted, or damaged, which hinders proper communication between the glow plug and the PCM.

How to Fix Code P26A2:

1. Checking possible causes:

   • Visually inspect the wiring and connectors associated with the exhaust gas post-treatment glow plug. Look for signs of damage, cuts, short circuits, or corrosion on the connector pins.

2. Checking the glow plug:

   • If the wiring appears intact, the glow plug may be faulty. You may need to replace it if it is no longer functioning correctly.

3. Testing the electrical circuit:

   • Use a multimeter to test the glow plug control circuit. Check if there is correct voltage when the engine is on. If the voltage is not within factory specifications, this may indicate a problem with the PCM or the glow plug itself.

4. Repairing or replacing faulty components:

   • If you find damaged wires, corroded connectors, or faulty glow plugs, replace them. For glow plugs, make sure to use replacement parts that are compatible with your vehicle model.

Conclusion:

The code P26A2 indicates a problem related to the exhaust gas post-treatment glow plug. The solution involves checking the wiring, connectors, and glow plug for any damage, corrosion, or malfunction. Once the faulty components are identified, replace them to resolve the issue and reset the error code.