P247E — Exhaust Gas Temperature Out of Range

The Diagnostic Trouble Code (DTC) P247E indicates that the exhaust gas temperature in a specific part of the emissions control system is outside the manufacturer’s specified range. Essentially, the vehicle’s Engine Control Unit (ECU) detects that the temperature reading is either too high or too low, which can affect the aftertreatment components like the catalytic converter or Diesel Particulate Filter (DPF). Note that labels and code descriptions may vary slightly between different vehicle manufacturers.

System affected: Emissions Control System (including DPF and catalytic converter)
Severity: Moderate — requires investigation but often manageable
Main symptoms: Reduced fuel efficiency, potential engine warning lights, possibly excess smoke
Driveability: Limited or No — depending on severity and underlying cause

—

Manufacturer variations for trouble code P247E

Different vehicle manufacturers may assign unique labels or descriptions for the P247E code within their diagnostic systems. While the core concern is related to exhaust gas temperature anomalies, the specific wording can vary. Here are some common manufacturer labels:

Ford: P247E – Inlet Exhaust Gas Temperature Sensor Out of Range
Volkswagen / Audi / Škoda / SEAT: P247E – Exhaust Gas Temperature Sensor Signal Out of Range
BMW / MINI: P247E – Exhaust Temperature Sensor Signal Malfunction
Mercedes-Benz: P247E – Exhaust Gas Temperature Sensor Circuit Range/Performance
Honda: P247E – Exhaust Gas Temperature Sensor Circuit Error

—

What does trouble code P247E mean?

In simple terms, P247E means the vehicle’s ECU has detected that the temperature of the exhaust gases measured by a sensor is either higher or lower than what is expected based on the vehicle’s operating conditions. This sensor generally plays a role in monitoring the thermal state of emissions components, such as the Diesel Particulate Filter (DPF) or catalytic converter.

The ECU constantly monitors the exhaust gas temperature sensor readings to ensure optimal functioning of emissions control systems. If the sensor’s output suggests abnormal temperature levels—whether due to heat being too intense or insufficient cooling—the ECU flags this with the P247E code.

This situation often appears after driving in conditions that place high demands on the engine or after recent maintenance involving the emissions system. When the ECU detects inconsistent or out-of-range signals, it triggers the code to alert the driver and potentially limit engine operation to avoid further damage.

—

Severity and risks of trouble code P247E

P247E can range from a minor issue to a significant fault, depending on the underlying cause. A sensor out-of-range reading might indicate a malfunctioning sensor, wiring issue, or a more serious problem like a failing DPF or catalytic converter. If ignored, this can lead to increased emissions, poor engine performance, or damage to exhaust aftertreatment components.

The risks include:

Reduced engine efficiency and power
Potential long-term damage to the emission control system
Increased emissions leading to failed inspections or legal issues
Possible engine damage if high temperatures are not correctly managed

Generally, this code is considered moderate in severity. Can the vehicle be driven? Yes, but only with caution and ideally for short distances until the root cause is identified and repaired. Prolonged driving with unaddressed issues might cause further damage or trigger other warning lights.

—

Symptoms of trouble code P247E

When P247E is present, drivers might notice certain signs indicating a problem with the exhaust temperature sensors or related components. Common symptoms include:

Illuminated Check Engine light (MIL)
Reduced engine performance or hesitation
Decreased fuel efficiency
Excessive or unusual exhaust smoke
Weak or no pre-warning symptoms, especially in early stages
Potential smell of unburned fuel or excessive heat from exhaust

In some cases, the vehicle may enter a limp mode to prevent further damage, further limiting driveability until repaired.

—

Most likely causes of trouble code P247E

This code usually arises due to issues affecting the accuracy of exhaust gas temperature readings or abnormal thermal conditions within the exhaust system. The causes are often interconnected, making systematic diagnosis essential. Here are the most probable causes, ranked from most common to least:

Faulty exhaust gas temperature sensor – the sensor itself may be defective or damaged, producing incorrect signals.
Wiring or connector issues – damaged, corroded, or loose wiring/connectors can disrupt sensor signals.
Excessive soot or debris buildup in the exhaust system – this can insulate the sensor or affect temperature readings.
Malfunctioning aftertreatment system components – such as a failing DPF or catalytic converter, which can cause abnormal temperature fluctuations.
Intake or exhaust system leaks – leaks in exhaust piping or around sensors can lead to false readings.
ECU or software issues – although rare, calibration or firmware problems can misinterpret sensor data.

—

How to diagnose trouble code P247E

Performing a systematic diagnosis ensures an accurate repair and prevents unnecessary replacements. Here is a general approach:

Begin with a visual inspection of the exhaust system, sensor wiring, and connectors for damage, corrosion, or disconnection.
Use a compatible scan tool to retrieve live data readings from the exhaust gas temperature sensors. Compare readings to manufacturer specifications.
Check for other related codes that could provide context, such as sensor circuit faults or other emissions-related issues.
Inspect and test the wiring continuity and resistance of the sensor circuit using a multimeter.
If accessible, perform a sensor voltage or resistance test as per OEM specifications.
Consider performing a smoke test or leak test on the exhaust system to identify leaks or blockages affecting temperature readings.
Replace the sensor if faulty, or repair wiring/connectors as needed.
Clear codes and perform a road test to verify if the issue reappears and if sensor readings stabilize within specifications.

—

Possible repairs for trouble code P247E

Once the cause has been identified, repairs can range from simple to complex. Here are the potential solutions:

Replace the faulty exhaust gas temperature sensor: This is usually a straightforward, professional procedure but may require special tools or access features.
Repair or replace damaged wiring or connectors: Ensures proper electrical connection and signal integrity. Basic repair within a professional’s scope.
Clean the exhaust system and sensors: Removing soot or debris can restore sensor accuracy. Often a DIY task, but specialist cleaning might be needed.
Address exhaust system leaks or blockages: Repairing or replacing damaged pipes or DPF components requires professional intervention.
Service or replace emission control components: When components like the DPF or catalytic converter are at fault, professional diagnosis and repair are essential.
Update ECU software: A software update might be necessary if response calibration is proven to be an issue. Performed by a qualified technician.

—

Vehicles commonly associated with trouble code P247E in Europe

This code is most often found in diesel-powered vehicles, especially those with advanced emissions systems. While specific prevalence data is limited, certain brands and engine families are more commonly involved.

In Europe, typical vehicle groups include:

Volkswagen Group

Volkswagen TDI engines (e.g., EA189, EA288)
Audi TDI models
Škoda TDI engines
SEAT TDI models

Ford

2.0L EcoBlue diesel engines
2.2L TDCi engines

BMW

BMW 2.0d, 3.0d diesel engines

Mercedes-Benz

OM651, OM654 diesel engine families

—

Frequent mistakes with trouble code P247E

Diagnosing and repairing P247E can sometimes lead to common pitfalls. Here are the main mistakes to avoid:

Replacing sensors without verifying the cause: Assuming the sensor is faulty without testing wiring or system conditions can lead to unnecessary repairs.
Overlooking wiring and connector issues: Purely replacing sensors without inspecting wiring can result in recurring problems.
Ignoring other system faults: Focusing solely on the sensor may ignore underlying issues like exhaust leaks or DPF faults.
Driving long distances with unresolved issues: This can cause further damage to emission components or increase repair costs.
Not resetting the ECU after repairs: Forgetting to clear codes can mask the persistence of the issue or make diagnosis difficult.

—

FAQ — trouble code P247E

Can this code disappear on its own?
Usually, P247E will not clear automatically unless the underlying problem is fixed. Sensor readings might return to normal temporarily, but the fault will likely reoccur if the root cause is still present.

Can I keep driving?
It is possible to drive with this code, especially if the vehicle does not exhibit severe symptoms. However, prolonged use without repairs can cause additional damage, emissions issues, or fuel economy decline. It’s best to have the issue diagnosed promptly.

Why does the code return after clearing?
If the root cause is not addressed—such as a faulty sensor, wiring issue, or exhaust leak—the code will reappear when the ECU rechecks the sensor’s readings on the next drive cycle.