P1521 Plymouth Valiant DTC Code

Plymouth Valiant Engine Specifications:

Engine Type :	Single Cylinder Engine
Cylinder Type :	V-Type Engine
Engine Air Intake Process :	Turbocharged Engine

Your Plymouth Valiant engine control system detects a problem, the computer stores the diagnostic trouble code P1521 in its memory. To figure out what is wrong with your vehicle you must first extract the P1521 DTC For Plymouth Valiant.

To solve P1521 Plymouth Valiant problem, you'll have to remove the muffler, crankcase and other components blocking the valve chamber. Then, remove the cylinder head bolts (label for easy re-installation) Adjust the jaws of the valve spring compressor until they touch the top and bottom of the valve chamber Push the tool in to compress the spring and tighten the jaws Remove the retainers and lift out the valves , compressors and springs

P1521 Plymouth Valiant DTC Meaning

P	Powertrain Code - Problem is related engine, transmission and emissions systems.
1	MFG - Manufacturer Specific
5	Auxiliary Emission Controls
2	Cruise Control Servo Indicates Low
1	PCM Stack Overrun

The rule of P1521 Plymouth Valiant code when it comes to emissions-related vehicle repair is that any modification that changes the vehicle from a certified configuration to a non-certified configuration is considered tampering: this applies to both vehicle owners and repair facilities and is, therefore, a Federal offense. Replacing a catalyst with a straight pipe is one traditional example of P1521. Likewise, overriding the OBD P1521 DTC For Plymouth Valiant system through the use of high-tech defeat devices or non-certified computer chips, for example, would also be considered tampering. The OBD system may, however, be repaired back to its original certified configuration with certified performance chips or appropriate aftermarket parts.