What Does P246E Mean?
The exhaust gas temperature sensor 4 on bank 1 has a circuit malfunction. This sensor, typically located furthest downstream in the exhaust system, monitors temperature for emissions system diagnostics and catalyst efficiency.
Common Causes
35%
Open or short circuit in EGT sensor wiring
30%
Failed EGT sensor (open circuit internally)
20%
Corroded or damaged connector at sensor
10%
Mechanical damage to sensor from road debris or impact
5%
Failed ECM (rare)
Diagnostic Steps
1
Step 1: Locate EGT sensor 4 on bank 1 (typically after catalytic converter or DPF) and inspect for physical damage
2
Step 2: Disconnect sensor connector and measure sensor resistance (should be 200-1000 ohms depending on temperature)
3
Step 3: Check for continuity in wiring between sensor connector and ECM; verify no shorts to ground or voltage
4
Step 4: Inspect connector terminals for corrosion, bent pins, or moisture intrusion
5
Step 5: If circuits test normal, replace EGT sensor; if wiring is damaged, repair harness
Estimated Repair Cost
$150 - $450
Parts + labor, varies by vehicle and location
The exhaust gas temperature sensor 4 on bank 1 has a circuit malfunction. This sensor, typically located furthest downstream in the exhaust system, monitors temperature for emissions system diagnostics and catalyst efficiency.
The most common cause of P246E (Exhaust Gas Temperature Sensor Circuit Bank 1 Sensor 4) is: Open or short circuit in EGT sensor wiring
Typical repair costs for P246E range from $150 to $450, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Vehicle is safe to drive but emissions monitoring is compromised. May affect DPF regeneration strategy and could lead to catalyst efficiency issues if left unrepaired.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P246E to identify the root cause.
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Quick Info
Category
Powertrain
System
Emissions Control System
Difficulty
Type
Generic (SAE)
Recommended Tools
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