Nash 400 C2727 Engine Trouble Code
What is Nash 400 C2727?
Nash 400 C2727 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.
C2727 on the Nash 400
The Nash 400 features a sequential multi-port fuel injection (SMFI) system where injector timing is tightly synchronised with the crankshaft signal. Wear on the crankshaft reluctor ring teeth produces signal dropout events that accumulate and eventually trigger C2727.
Code Information
| Code Type: | OBD-II Chassis (C) Trouble Code |
| System: | Chassis |
| Vehicle: | Nash 400 |
| Brand: | Nash |
| Model: | 400 |
| Code: | C2727 |
C2727 Nash 400 Symptoms
Check Engine Light
Illuminated Nash 400 dashboard warning
Engine Stalling
Engine stops unexpectedly or misfires
Performance Issues
Reduced power or acceleration on the Nash 400
Starting Problems
Difficulty starting the engine
Poor Fuel Economy
Increased fuel consumption on the Nash 400
Increased Emissions
Failed emissions test due to C2727
C2727 Code Structure
Understanding what each digit means in the C2727 chassis trouble code:
| C | 2 | 7 | 2 | 7 |
|---|---|---|---|---|
| Chassis Code | Fuel And Air Metering (Injector Circuit Malfunctions Only) | Fuel Rail Pressure Sensor Circuit Malfunction | Turbocharger Boost Sensor A Circuit Low | Shift/Timing Solenoid Malfunction |
How to Fix Nash 400 C2727
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:
VSS concerns may stem from noisy input signals caused by RFI/EMI from ignition wires, charging circuits, or aftermarket equipment. Verify VSS reads 0 mph when transmission is in Park.
Technical Notes:
C2727 DTC specifically relates to camshaft timing. When cam timing is over-retarded, the check-engine light illuminates and this code sets. Verify VCT solenoid operation and check for contamination.
Nash 400 C2727 Repair Cost
Intercooler hose replacement on turbocharged Nash 400 models costs $120–$250 per section. A boost-leak smoke test ($50–$80) is the definitive diagnostic method and will pinpoint exactly which hose or connection is at fault before any parts are ordered.
C2727 Description
C2727 engine trouble code is related to Shift/Timing Solenoid Malfunction.
Main Cause
The primary reason for C2727 OBD-II Engine Trouble Code is: Fuel Rail Pressure Sensor Circuit Malfunction.
Common C2727 Misdiagnosis on the Nash 400
Replacing the PCM/ECU on the Nash 400 for a persistent C2727 is a last-resort action that is often performed prematurely. Statistically, less than 2% of C2727 faults on this platform originate in the ECU; wiring, sensors, and mechanical causes account for the remainder.
DIY Repair Guide: C2727 on Nash 400
Replacing the oxygen sensor on the Nash 400 requires an O2 sensor socket (22mm or 7/8") and penetrating oil applied 24 hours in advance. On vehicles over five years old, the sensor threads often corrode into the bung; heat from a propane torch (briefly applied) is usually sufficient to free them.
Preventing C2727 on the Nash 400
The Nash 400 benefits from an intake manifold decarbonisation at 50,000-mile intervals when direct injection is fitted. Carbon build-up on intake valve stems restricts airflow and creates the lean conditions that trigger C2727.
Frequently Asked Questions — Nash 400 C2727
A: Yes. Some fault conditions, particularly those involving EVAP system leaks or marginal sensor readings, store codes without producing noticeable drivability symptoms. These are called memory faults and still need to be addressed because they will eventually cause performance issues.