Pierce-arrow Silver P273D Engine Trouble Code
What is Pierce-arrow Silver P273D?
Pierce-arrow Silver P273D code can indicate a faulty oxygen sensor, which may eventually damage the catalytic converter (repair cost: $2,000–$2,200). Professional diagnosis costs around $200–$210. Oxygen sensors are often straightforward to replace — check your owner's manual for location and instructions. This issue should be addressed promptly to prevent further damage.
P273D on the Pierce-arrow Silver
Transmission-mounted speed sensors on the Pierce-arrow Silver share a ground path with the engine control module. A corroded ground point on the transmission bell housing generates electrical noise that the ECU misinterprets as a P273D fault condition.
Code Information
| Code Type: | OBD-II Powertrain (P) Trouble Code |
| System: | Powertrain |
| Vehicle: | Pierce-arrow Silver |
| Brand: | Pierce-arrow |
| Model: | Silver |
| Code: | P273D |
P273D Pierce-arrow Silver Symptoms
Check Engine Light
Illuminated Pierce-arrow Silver dashboard warning
Engine Stalling
Engine stops unexpectedly or misfires
Performance Issues
Reduced power or acceleration on the Pierce-arrow Silver
Starting Problems
Difficulty starting the engine
Poor Fuel Economy
Increased fuel consumption on the Pierce-arrow Silver
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 Pierce-arrow Silver P273D
Diagnostic Steps:
Regarding P273D, carefully inspect the wire harness near the intake manifold bracket, best accessed from below near the oil filter. Look for chafing, pinching, or damaged insulation.
Repair Solution:
Verify all electrical connections are clean and tight. Check for damaged wiring, especially in high-heat or high-vibration areas. Use manufacturer wiring diagrams for accurate diagnosis.
Technical Notes:
P273D on electronically controlled automatic transmissions relates to shift solenoid operation. The solenoid actuates hydraulic circuits controlling clutches or bands for gear changes.
Pierce-arrow Silver P273D Repair Cost
For Pierce-arrow Silver diesel variants with swirl flap actuator failure causing P273D, the repair ranges from $180 (actuator only) to $900+ if a broken flap has been ingested by the engine. Early intervention is strongly recommended.
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 Pierce-arrow Silver
A frequent misdiagnosis on the Pierce-arrow Silver is replacing the oxygen sensor when P273D appears, only for the code to return within days. The actual cause is usually an exhaust manifold gasket leak introducing false air before the upstream O2 sensor — a much cheaper fix.
DIY Repair Guide: P273D on Pierce-arrow Silver
The throttle body on the Pierce-arrow Silver can be cleaned without full removal. Use a clean rag and throttle body cleaner spray with the engine off and cool. After cleaning, an idle relearn is mandatory: disconnect the battery for 10 minutes, reconnect, and allow the engine to idle for 10 minutes undisturbed.
Preventing P273D on the Pierce-arrow Silver
Verify that the Pierce-arrow Silver engine air box lid clips are fully seated after any air filter service. An unsealed air box is a direct path for unmetered air past the MAF sensor and is an extremely common — and extremely embarrassing — cause of P273D.
Frequently Asked Questions — Pierce-arrow Silver P273D
A: Not always. Across model years, Pierce-arrow revised sensor specifications, wiring paths, and ECU calibrations. Always confirm the repair procedure matches your specific vehicle's production year and engine code, as parts and labour times can vary significantly.