What is OBD-II Code P21C8? The P21C8 code indicates that there is a problem with the Reductant Control Module Power Relay/Relays Control Circuit. This module is responsible for controlling the injection of the diesel exhaust fluid (DEF) that your car uses.

OBD2 Diagnostic Trouble Code P21C8 means that Reductant Control Module Power Relay/Relays Control Circuit Low has been detected. How Serious Is the Code P21C8? For now, this issue is not serious. Carly recommends you to check this issue on a regular basis and check if it gets worse later on. *Every car is unique.

2024年7月27日 · Replaced with used low milage DSG. My son put about 10K on it, then managed to catch the Active Shutter wiring and tore it. I spliced it back together and all seemed fine. Then the car went into limp mode and puked a bunch of codes (see below). My next step is to go back and look at my repair job and make sure it all looks good.

DTC P21C8, sometimes indicated as P21C800, is an OBD diagnostic trouble code indicating a manufacturer-specific fault with the vehicle powertrain (Emission Control (Diesel Engines)). P21C8 : Reductant Control Module Power Relay/Relays Control Circuit Low

Home DTCP21C8 Code: P21C8 System: Powertrain (Covers functions that include engine, transmission and associated drivetrain accessories) Category: ISO/SAE (It is core DTCs and applied to most manufacturers. A common fault message is assigned to this code.) Component: Fuel and air metering and auxiliary emission controls Definition: ISO/SAE:

Check the stored Freeze Frame data with this fault code. Freeze Frame information will be found in the fault code description (if the module supports it) or in Generic OBD-II if the vehicle …

Technical Definition: Reductant Control Module Power Relay/Relays Control Circuit Low Trouble Code: P21C8 Address: 0x21C8 System: Powertrain Subsystem: Technical Description: Possible Causes: Possible Symptoms: Possible Solutions: OBD-II Trouble Code Type: Diagnostic Step: Tech Notes: Specific Makes:

2019年3月4日 · Quick scan with obdeleven once home shows: Cam shift Actuator “A” cylinder 4. Fault code: P11AE00. Status: static. Anyone shed some light on this issue, or experienced similar issues? Assuming these ‘actuators’ are the two things behind each spark plug, with “A” referring to one of these? Any help greatly appreciated. Thanks.

P21C8 - averia Relé de alimentación del módulo de control del agente reductor - señal baja en circuito de control

Technical Description: Possible Causes: Possible Symptoms: Possible Solutions: OBD-II Trouble Code Type: Diagnostic Step: Tech Notes: Specific Makes: