B1638 Volvo 940 DTC Code

Volvo 940 Engine Specifications:

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

Your Volvo 940 engine control system detects a problem, the computer stores the diagnostic trouble code B1638 in its memory. To figure out what is wrong with your vehicle you must first extract the B1638 DTC For Volvo 940.

A good ground connection is also extremely important. B1638 Volvo 940 engine problem because the presence of voltage at the panel harness won't make the panel work if there is a bad ground connection. Since the instrument cluster is mounted in a plastic dash, a separate ground wire or ground circuit through the wiring harness is usually needed to complete the power circuit. Refer again to the wiring diagram to find the ground path, and then check it with your ohmmeter. Do not use a self-powered test light because it cannot measure resistance (any resistance will lower circuit voltage).

B1638 Volvo 940 DTC Meaning

B	Body Code - Problem is antilock brake system, electronic suspension and steering systems.
1	MFG - Manufacturer Specific
6	Vehicle Speed Control And Idle Control System
3	Low Coolant Circuit
8	Park/Neutral Postion (PNP) Switch Circuit Engine Torque Signal Circuit

The rule of B1638 Volvo 940 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 B1638. Likewise, overriding the OBD B1638 DTC For Volvo 940 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.