Plymouth Cuda B1805 Engine Trouble Code
What is Plymouth Cuda B1805?
Plymouth Cuda B1805 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.
B1805 on the Plymouth Cuda
Independent workshop data shows that Plymouth Cuda vehicles with B1805 resolve approximately 40% of cases after a throttle body cleaning and idle relearn procedure. This is always the recommended first step before investing in new sensors.
Code Information
| Code Type: | OBD-II Body (B) Trouble Code |
| System: | Body |
| Vehicle: | Plymouth Cuda |
| Brand: | Plymouth |
| Model: | Cuda |
| Code: | B1805 |
B1805 Plymouth Cuda Symptoms
Check Engine Light
Illuminated Plymouth Cuda dashboard warning
Engine Stalling
Engine stops unexpectedly or misfires
Performance Issues
Reduced power or acceleration on the Plymouth Cuda
Starting Problems
Difficulty starting the engine
Poor Fuel Economy
Increased fuel consumption on the Plymouth Cuda
Increased Emissions
Failed emissions test due to B1805
B1805 Code Structure
Understanding what each digit means in the B1805 body trouble code:
| B | 1 | 8 | 0 | 5 |
|---|---|---|---|---|
| Body Code | Fuel And Air Metering | Engine Oil Temperature Sensor Malfunction | Cold Start Injector 1 Malfunction | Crankshaft Position Sensor B Circuit Malfunction |
How to Fix Plymouth Cuda B1805
Diagnostic Steps:
Regarding B1805, 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:
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 B1805 DTC. Consult your vehicle service manual for proper diagnostic procedures, possible causes, and required testing before replacement.
Plymouth Cuda B1805 Repair Cost
Addressing B1805 on your Plymouth Cuda typically involves: dealer diagnostic fee $95–$150, oxygen sensor replacement $180–$320 (parts + labour), or catalytic converter replacement $1,800–$2,400 if damage has progressed. Independent specialist garages often charge 20–30% less than franchised dealers for identical work.
B1805 Description
B1805 engine trouble code is related to Crankshaft Position Sensor B Circuit Malfunction.
Main Cause
The primary reason for B1805 OBD-II Engine Trouble Code is: Engine Oil Temperature Sensor Malfunction.
Common B1805 Misdiagnosis on the Plymouth Cuda
On the Plymouth Cuda, the EGR cooler is sometimes replaced for B1805 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: B1805 on Plymouth Cuda
The coolant temperature sensor on the Plymouth Cuda is a straightforward DIY item (difficulty 2/5). Have a drain tray ready for the small amount of coolant that spills when the sensor is removed. Top up the cooling system afterwards and check for air pockets.
Preventing B1805 on the Plymouth Cuda
The Plymouth Cuda EVAP system requires the fuel tank breather hoses to be flexible and crack-free. A visual inspection at every oil change prevents the slow vacuum leak that triggers B1805 without any drivability symptom.
Frequently Asked Questions — Plymouth Cuda B1805
A: Not always. Across model years, Plymouth 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.