Alfa Romeo 155 P262E Engine Trouble Code
What is Alfa Romeo 155 P262E?
When Alfa Romeo 155 P262E code appears, first check your gas cap. Pull over safely, ensure it is tight, and inspect for cracks. A loose or damaged gas cap affects fuel-system pressure and emissions. A replacement cap costs about $3–$10. This simple fix can resolve the code and improve fuel economy.
P262E on the Alfa Romeo 155
Diesel variants of the Alfa Romeo 155 trigger P262E most often due to swirl flap actuator failure. The plastic actuator arm breaks and the flap defaults to the closed position, causing severe intake restriction and the associated fault flag.
Code Information
| Code Type: | OBD-II Powertrain (P) Trouble Code |
| System: | Powertrain |
| Vehicle: | Alfa Romeo 155 |
| Brand: | Alfa |
| Model: | Romeo 155 |
| Code: | P262E |
P262E Alfa Romeo 155 Symptoms
Check Engine Light
Illuminated Alfa Romeo 155 dashboard warning
Engine Stalling
Engine stops unexpectedly or misfires
Performance Issues
Reduced power or acceleration on the Alfa Romeo 155
Starting Problems
Difficulty starting the engine
Poor Fuel Economy
Increased fuel consumption on the Alfa Romeo 155
Increased Emissions
Failed emissions test due to P262E
P262E Code Structure
Understanding what each digit means in the P262E powertrain trouble code:
| P | 2 | 6 | 2 | e |
|---|---|---|---|---|
| Powertrain Code | Fuel And Air Metering (Injector Circuit Malfunctions Only) | Fuel Temperature Sensor B Circuit Range/Performance | Turbocharger Boost Sensor A Circuit Low | System Malfunction |
How to Fix Alfa Romeo 155 P262E
Diagnostic Steps:
Oxygen sensors measure exhaust gas oxygen content to optimise air-fuel ratio. This optimisation improves fuel economy and reduces emissions. Sensors degrade over time and require periodic replacement.
Repair Solution:
Power steering pressure switch monitors system operation. If pressure changes are not detected after calibrated speed transitions, this DTC sets. Verify PSP switch operation and check for circuit opens or shorts.
Technical Notes:
P262E DTCs can be triggered by upstream issues. For example, a dirty MAF sensor may cause incorrect fuel-trim adjustments, leading oxygen sensors to report mixture problems. Address root causes first.
Alfa Romeo 155 P262E Repair Cost
On the Alfa Romeo 155, secondary air injection pump replacement for a P262E code runs $350–$600. Because the pump is only active during cold starts, symptoms are easily missed. Requesting a cold-start emissions test at the workshop will confirm whether the pump is operating.
P262E Description
P262E engine trouble code is related to System Malfunction.
Main Cause
The primary reason for P262E OBD-II Engine Trouble Code is: Fuel Temperature Sensor B Circuit Range/Performance.
Common P262E Misdiagnosis on the Alfa Romeo 155
Workshop technicians sometimes replace the entire ignition coil assembly on the Alfa Romeo 155 when P262E accompanies a cylinder-specific misfire. In many cases, only the spark plug in the misfiring cylinder has fouled; a $8 plug replaces a $140 coil pack.
DIY Repair Guide: P262E on Alfa Romeo 155
Replacing the spark plugs on the Alfa Romeo 155 is rated a difficulty 2/5 for home mechanics. The top-mounted plug access on this engine requires a 3/8" extension and a 14mm spark plug socket. Always torque to the manufacturer's specification to avoid cracking the cylinder head.
Preventing P262E on the Alfa Romeo 155
After any fuel system repair on the Alfa Romeo 155, always perform a fuel-trim reset and adaptation drive. Skipping this step leaves the ECU operating on pre-repair learned values, which can generate false P262E alerts for weeks after the fix.
Frequently Asked Questions — Alfa Romeo 155 P262E
A: P262E is a standardised OBD-II code that can appear on any make and model. However, the specific components and circuits that trigger this code, and the repair procedures involved, vary significantly between vehicles. The information on this page is focused on the Alfa Romeo 155.