What is P1405 : Engine Error code Causes Explained
This Tutorial covers the P1405 engine fault code, which indicates an EGR system issue. It usually indicates an EGR valve or sensor issue affecting emission control and engine performance.
How to Identify a DTCs Number
The Diagnostic Trouble Code (DTC) P1405 is related to an issue with the exhaust gas recirculation (EGR) system, particularly the EGR temperature sensor.
Understand that the trouble codes (DTCs) are 5 characters: 1 letter, 4 numbers. P-Powertrain indicates the fault code’s location. Generic or manufacturer-specific codes are indicated by the first digit. The second digit denotes the subsystem (7=transmission). The last two numbers describe the issue.
This error typically arises when the temperature sensor in the EGR system detects irregular readings or fails to function as expected.
Causes of P1405 Code:
- Faulty DPFE sensor:
This is the most common cause, as the sensor might be damaged, dirty, or malfunctioning. - Damaged DPFE sensor wiring:
Check for broken wires, loose connections, or corroded terminals within the DPFE sensor circuit. - Leaks in the EGR system:
Leaks in the EGR hoses or gaskets can disrupt the pressure readings, triggering the code. - Clogged EGR passages:
Carbon buildup within the EGR system can restrict exhaust flow, impacting the DPFE sensor readings. - Damaged upstream DPFE sensor hose:
A damaged or disconnected hose connected to the DPFE sensor can affect its readings. - Malfunctioning EGR valve:
A stuck or improperly functioning EGR valve can contribute to the P1405 code. - PCM failure (rare):
In some cases, a faulty Powertrain Control Module (PCM) could also cause this code, though it’s less likely.
Risk Level of P1405 Error Code:
The “High Risk Level” implies that the EGR system problem affects engine performance and emissions control.
This mistake might cause poor fuel efficiency, high engine temperatures, or catalytic converter damage if left unchecked.
Common Car Brand Affected by P1405 Code:
The P1405 engine error code is commonly found in Ford.
Video: P1405 Engine Error code
FAQ’s
What is the P1405 engine error code?
The P1405 error code indicates a problem with the exhaust gas recirculation (EGR) valve position sensor circuit, specifically a malfunction in the EGR position sensor on some vehicles.
What causes the P1405 error code?
This error code is usually caused by a faulty EGR valve position sensor, damaged wiring, or a malfunctioning EGR valve. It could also be due to a clogged EGR system or poor electrical connections.
What is the risk level of the P1405 error code?
The risk level of the P1405 error code is moderate. If left unresolved, it may lead to engine performance issues, reduced fuel efficiency, and increased emissions, but it typically doesn’t cause immediate engine damage.
What vehicles are affected by the P1405 error code?
The P1405 error code is commonly seen in vehicles with EGR systems like a Ford.