Fiat Punto Evo P273D Engine Trouble Code
What is Fiat Punto Evo P273D?
Fiat Punto Evo P273D indicates potential catalytic converter failure. If completely failed, your vehicle may not run properly and fuel economy will suffer significantly. Average replacement cost is $2,000–$2,140. This repair requires professional service and should not be delayed.
P273D on the Fiat Punto Evo
Owners who tow regularly with their Fiat Punto Evo should pay extra attention to P273D. The additional thermal load placed on the transmission fluid accelerates the degradation of the torque converter clutch solenoid, a frequent secondary cause of this code.
Code Information
| Code Type: | OBD-II Powertrain (P) Trouble Code |
| System: | Powertrain |
| Vehicle: | Fiat Punto Evo |
| Brand: | Fiat |
| Model: | Punto Evo |
| Code: | P273D |
P273D Fiat Punto Evo Symptoms
Check Engine Light
Illuminated Fiat Punto Evo dashboard warning
Engine Stalling
Engine stops unexpectedly or misfires
Performance Issues
Reduced power or acceleration on the Fiat Punto Evo
Starting Problems
Difficulty starting the engine
Poor Fuel Economy
Increased fuel consumption on the Fiat Punto Evo
Increased Emissions
Failed emissions test due to P273D
P273D Code Structure
Understanding what each digit means in the P273D powertrain trouble code:
| P | 2 | 7 | 3 | d |
|---|---|---|---|---|
| Powertrain Code | Fuel And Air Metering (Injector Circuit Malfunctions Only) | Fuel Rail Pressure Sensor Circuit Malfunction | Injection Pump Fuel Metering Control 'A' High | System Malfunction |
How to Fix Fiat Punto Evo P273D
Diagnostic Steps:
The catalytic converter has oxygen sensors before and after it. When warm and in closed-loop mode, the upstream O2 sensor reading should fluctuate, while downstream should remain steady.
Repair Solution:
Crankshaft position sensor signals the computer for precise ignition and fuel injection timing. Faulty sensors cause rough running and reduced efficiency. Modern vehicles enter limp mode and illuminate the check-engine light.
Technical Notes:
Parts or components should not be replaced based solely on P273D DTC. Consult your vehicle service manual for proper diagnostic procedures, possible causes, and required testing before replacement.
Fiat Punto Evo P273D Repair Cost
PCV system overhaul on the Fiat Punto Evo — which resolves oil-mist contamination of the MAF sensor — costs $100–$200. The MAF sensor should be cleaned ($15–$25 DIY) or replaced ($80–$150) at the same time to ensure accurate fuelling after the fix.
P273D Description
P273D engine trouble code is related to System Malfunction.
Main Cause
The primary reason for P273D OBD-II Engine Trouble Code is: Fuel Rail Pressure Sensor Circuit Malfunction.
Common P273D Misdiagnosis on the Fiat Punto Evo
On the Fiat Punto Evo, the EGR cooler is sometimes replaced for P273D when the EGR valve position sensor is at fault. The two components share a fault pathway in older scan tools that do not display live EGR valve position data.
DIY Repair Guide: P273D on Fiat Punto Evo
When attempting DIY diagnosis of P273D on your Fiat Punto Evo, a smoke machine test is the gold standard for finding vacuum leaks. Rental tools are available from most auto parts stores for $0–$20/day, or you can fabricate a makeshift tester using a hand vacuum pump and soapy water spray.
Preventing P273D on the Fiat Punto Evo
The Fiat Punto Evo coolant temperature sensor plays a role in fuel enrichment during warm-up. Replacing it as a precaution at 80,000 miles ($25–$40 DIY) prevents the faulty cold-start enrichment that can lead to P273D.
Frequently Asked Questions — Fiat Punto Evo P273D
A: Clearing the code without repair allows the fault condition to persist. Depending on the cause, this can lead to catalytic converter damage, increased fuel consumption, and secondary component failures that are significantly more expensive to address than the original fault.