Code
C0002
Generic
C — Chassis
TCS Control Channel A Valve 2
Views:
UK: 20
EN: 39
RU: 31
AI status
Completed
Completed
100%
Causes
- Open or shorted wiring in valve 2 circuit (open, short to ground, short to battery)
- Corroded, loose, or damaged connector at the valve
- Faulty TCS/ABS control valve or solenoid (stuck, internally shorted/open)
- Low or intermittent battery/ignition voltage to the module or valve
- Faulty ABS/TCS module output driver
- Hydraulic contamination or mechanical blockage preventing valve movement
Symptoms
- TCS or ABS warning light illuminated
- Traction control/ABS may be disabled or operate in limp mode
- Reduced or no traction control intervention on affected wheels
- Brake modulation/pulsing anomalies during ABS events
- Fault stored in ABS/TCS module and possible degraded drivability
What to check
- Read and record ABS/TCS codes with a manufacturer-capable scan tool; note freeze frame and related codes
- Visual inspection of harness and connector to valve 2 for corrosion, damage, pin push-out or water ingress
- Check battery condition and system voltage with key on/engine off and during cranking
- Inspect fuses and relays for ABS/TCS circuit power
- Backprobe connector at valve and measure coil resistance and supply voltage (compare to service data)
- Perform wiggle test on harness while monitoring live data or commanded activation to see intermittent faults
Signal parameters
- Coil resistance (typical valve coil): low-ohm range — consult vehicle service manual for exact spec (commonly roughly 5–50 Ω depending on design)
- Control signal: PWM command from ABS/TCS module — typically a switched ground or switched supply; duty cycle varies during modulation
- Nominal supply voltage at valve connector with key ON: battery voltage (~11–14 V)
- Expected behavior when commanded: coil current draw within spec and valve actuation; no open/short to ground or battery — confirm with service data
Diagnostic algorithm
- Retrieve all ABS/TCS trouble codes and freeze frame info with a scan tool; note any related codes.
- Visually inspect valve 2 connector and harness for corrosion, corrosion-in-pins, broken wires, or water intrusion; repair or clean as needed.
- Verify battery and system voltage (key ON). Check relevant fuses and relays for the ABS/TCS power feed.
- Disconnect valve connector. With ignition off, measure coil resistance across valve terminals and compare to service spec. An open or shorted coil indicates valve replacement.
- With connector connected and key ON (engine off), backprobe and measure supply voltage to valve and the return/command signal while commanding the valve with a scan tool. Look for correct voltage and PWM signal; no supply indicates wiring/fuse/power issue.
- Perform continuity and short-to-ground/power tests on the harness between the valve connector and ABS/TCS module. Repair any wiring faults.
- If wiring and supply are good but valve does not respond to commanded operation (and coil resistance is within spec), suspect module driver fault—verify by commanding a known-good valve or swapping channels where permitted by service data.
- If valve replacement is required, replace the valve/solenoid (or entire valve block as specified), clear codes, and perform a system bleed and relearn procedures per manufacturer instructions.
- Road test and monitor for reoccurrence; if fault persists and wiring/valve checks are good, further module-level diagnosis or replacement may be needed.
Likely causes
- Wiring/connectors at valve 2 are damaged or corroded
- Valve 2 solenoid coil has failed (open or shorted)
- Module driver for channel A valve 2 has failed
- Poor battery/ignition supply or a blown fuse supplying the ABS/TCS system
Fault status
Status
TCS Control Channel A Valve 2 malfunction detected — inspect valve, wiring and ABS/TCS module.
Repair difficulty: Medium
Diagnostic time: 1.0-2.5 hours
Similar codes
Workshop Manuals
Available brands with manuals
2
AUDI 11
6-speed manual gearbox 0B1, front-wheel drive — Workshop Manual (Edition 05.2014)
Workshop Manual199,00 UAH
Audi A3 (1997) – 1.6L 4-cylinder (2‑valve) Engine Mechanical Components Service Manual (AEH, AKL, APF) – Edition 07.2002
Workshop Manual199,00 UAH
AUDI A3 (2004) Workshop Manual — 2.0L FSI Turbo (4‑cyl, 4‑valve) Engine, Mechanics — Edition 03.2017
Workshop Manual199,00 UAH
Audi A3 2004 — Electrical System (Workshop Manual, Edition 02.2018)
Workshop Manual199,00 UAH
Audi A4 / A4 Cabriolet – 4.2 l V8 (5‑valve, timing chains) – Workshop Manual (Mechanics) – Edition 04.2007
Workshop Manual199,00 UAH
Audi A4 / A4 Cabriolet — Auxiliary Heater Workshop Manual (Edition 08.2004)
Workshop Manual199,00 UAH
Audi A4 / A4 Cabriolet (1.8T 4‑cyl turbo) — Motronic Injection & Ignition System Service Manual (Edition 01.2015)
Workshop Manual199,00 UAH
Audi A8 (2003) — Electrical System Workshop Manual (Edition 08.2014)
Workshop Manual199,00 UAH
Audi Q4 e-tron (Type F4) - Self-study Programme SSP 685
Workshop Manual199,00 UAH
Audi Q8 (2018) — Electrical System Workshop Manual (Edition 05.2019)
Workshop Manual199,00 UAH
Audi Servicing Manual — 7‑Speed Dual Clutch Transmission 0CJ / 0CL / 0CK / 0DN / 0DP / 0HL (Edition 05.2018)
Workshop Manual199,00 UAH
LAND ROVER 3
Land Rover Defender 300Tdi — Workshop Manual (1996 model year)
Workshop Manual199,00 UAH
Land Rover Defender Workshop Manual Supplement & Body Repair Manual (1999 & 2002 MY)
Workshop Manual199,00 UAH
Land Rover Range Rover — Electrical Library (LRL 0453ENG, 2002)
Workshop Manual199,00 UAH
Your experience will help others
+100 karma for a short comment :)
Was this AI description helpful?
Your feedback helps improve AI descriptions.
👍 Like
0
👎 Dislike
0
Send to email
Code
C0002
HYUNDAI
C — Chassis
TCS Control Channel “A” Valve 2 (Subfault)
Views:
UK: 13
EN: 23
RU: 22
AI status
Completed
Completed
100%
Causes
- Open or shorted wiring in valve 2 circuit (open, short to ground, short to battery)
- Corroded, loose, or damaged connector at the valve
- Faulty TCS/ABS control valve or solenoid (stuck, internally shorted/open)
- Low or intermittent battery/ignition voltage to the module or valve
- Faulty ABS/TCS module output driver
- Hydraulic contamination or mechanical blockage preventing valve movement
Symptoms
- TCS or ABS warning light illuminated
- Traction control/ABS may be disabled or operate in limp mode
- Reduced or no traction control intervention on affected wheels
- Brake modulation/pulsing anomalies during ABS events
- Fault stored in ABS/TCS module and possible degraded drivability
What to check
- Read and record ABS/TCS codes with a manufacturer-capable scan tool; note freeze frame and related codes
- Visual inspection of harness and connector to valve 2 for corrosion, damage, pin push-out or water ingress
- Check battery condition and system voltage with key on/engine off and during cranking
- Inspect fuses and relays for ABS/TCS circuit power
- Backprobe connector at valve and measure coil resistance and supply voltage (compare to service data)
- Perform wiggle test on harness while monitoring live data or commanded activation to see intermittent faults
Signal parameters
- Coil resistance (typical valve coil): low-ohm range — consult vehicle service manual for exact spec (commonly roughly 5–50 Ω depending on design)
- Control signal: PWM command from ABS/TCS module — typically a switched ground or switched supply; duty cycle varies during modulation
- Nominal supply voltage at valve connector with key ON: battery voltage (~11–14 V)
- Expected behavior when commanded: coil current draw within spec and valve actuation; no open/short to ground or battery — confirm with service data
Diagnostic algorithm
- Retrieve all ABS/TCS trouble codes and freeze frame info with a scan tool; note any related codes.
- Visually inspect valve 2 connector and harness for corrosion, corrosion-in-pins, broken wires, or water intrusion; repair or clean as needed.
- Verify battery and system voltage (key ON). Check relevant fuses and relays for the ABS/TCS power feed.
- Disconnect valve connector. With ignition off, measure coil resistance across valve terminals and compare to service spec. An open or shorted coil indicates valve replacement.
- With connector connected and key ON (engine off), backprobe and measure supply voltage to valve and the return/command signal while commanding the valve with a scan tool. Look for correct voltage and PWM signal; no supply indicates wiring/fuse/power issue.
- Perform continuity and short-to-ground/power tests on the harness between the valve connector and ABS/TCS module. Repair any wiring faults.
- If wiring and supply are good but valve does not respond to commanded operation (and coil resistance is within spec), suspect module driver fault—verify by commanding a known-good valve or swapping channels where permitted by service data.
- If valve replacement is required, replace the valve/solenoid (or entire valve block as specified), clear codes, and perform a system bleed and relearn procedures per manufacturer instructions.
- Road test and monitor for reoccurrence; if fault persists and wiring/valve checks are good, further module-level diagnosis or replacement may be needed.
Likely causes
- Wiring/connectors at valve 2 are damaged or corroded
- Valve 2 solenoid coil has failed (open or shorted)
- Module driver for channel A valve 2 has failed
- Poor battery/ignition supply or a blown fuse supplying the ABS/TCS system
Fault status
Status
TCS Control Channel A Valve 2 malfunction detected — inspect valve, wiring and ABS/TCS module.
Repair difficulty: Medium
Diagnostic time: 1.0-2.5 hours
Similar codes
Your experience will help others
+100 karma for a short comment :)
Was this AI description helpful?
Your feedback helps improve AI descriptions.
👍 Like
0
👎 Dislike
0
Send to email
Code
C0002
LAND ROVER
C — Chassis
Control of the control key of traction - channel B, valve 1
Views:
UK: 5
EN: 14
RU: 10
AI status
Completed
Completed
100%
Causes
- Open or shorted wiring in valve 2 circuit (open, short to ground, short to battery)
- Corroded, loose, or damaged connector at the valve
- Faulty TCS/ABS control valve or solenoid (stuck, internally shorted/open)
- Low or intermittent battery/ignition voltage to the module or valve
- Faulty ABS/TCS module output driver
- Hydraulic contamination or mechanical blockage preventing valve movement
Symptoms
- TCS or ABS warning light illuminated
- Traction control/ABS may be disabled or operate in limp mode
- Reduced or no traction control intervention on affected wheels
- Brake modulation/pulsing anomalies during ABS events
- Fault stored in ABS/TCS module and possible degraded drivability
What to check
- Read and record ABS/TCS codes with a manufacturer-capable scan tool; note freeze frame and related codes
- Visual inspection of harness and connector to valve 2 for corrosion, damage, pin push-out or water ingress
- Check battery condition and system voltage with key on/engine off and during cranking
- Inspect fuses and relays for ABS/TCS circuit power
- Backprobe connector at valve and measure coil resistance and supply voltage (compare to service data)
- Perform wiggle test on harness while monitoring live data or commanded activation to see intermittent faults
Signal parameters
- Coil resistance (typical valve coil): low-ohm range — consult vehicle service manual for exact spec (commonly roughly 5–50 Ω depending on design)
- Control signal: PWM command from ABS/TCS module — typically a switched ground or switched supply; duty cycle varies during modulation
- Nominal supply voltage at valve connector with key ON: battery voltage (~11–14 V)
- Expected behavior when commanded: coil current draw within spec and valve actuation; no open/short to ground or battery — confirm with service data
Diagnostic algorithm
- Retrieve all ABS/TCS trouble codes and freeze frame info with a scan tool; note any related codes.
- Visually inspect valve 2 connector and harness for corrosion, corrosion-in-pins, broken wires, or water intrusion; repair or clean as needed.
- Verify battery and system voltage (key ON). Check relevant fuses and relays for the ABS/TCS power feed.
- Disconnect valve connector. With ignition off, measure coil resistance across valve terminals and compare to service spec. An open or shorted coil indicates valve replacement.
- With connector connected and key ON (engine off), backprobe and measure supply voltage to valve and the return/command signal while commanding the valve with a scan tool. Look for correct voltage and PWM signal; no supply indicates wiring/fuse/power issue.
- Perform continuity and short-to-ground/power tests on the harness between the valve connector and ABS/TCS module. Repair any wiring faults.
- If wiring and supply are good but valve does not respond to commanded operation (and coil resistance is within spec), suspect module driver fault—verify by commanding a known-good valve or swapping channels where permitted by service data.
- If valve replacement is required, replace the valve/solenoid (or entire valve block as specified), clear codes, and perform a system bleed and relearn procedures per manufacturer instructions.
- Road test and monitor for reoccurrence; if fault persists and wiring/valve checks are good, further module-level diagnosis or replacement may be needed.
Likely causes
- Wiring/connectors at valve 2 are damaged or corroded
- Valve 2 solenoid coil has failed (open or shorted)
- Module driver for channel A valve 2 has failed
- Poor battery/ignition supply or a blown fuse supplying the ABS/TCS system
Fault status
Status
TCS Control Channel A Valve 2 malfunction detected — inspect valve, wiring and ABS/TCS module.
Repair difficulty: Medium
Diagnostic time: 1.0-2.5 hours
Similar codes
Workshop Manuals
Repair manuals for LAND ROVER
3
Land Rover Defender 300Tdi — Workshop Manual (1996 model year)
Workshop Manual199,00 UAH
Land Rover Defender Workshop Manual Supplement & Body Repair Manual (1999 & 2002 MY)
Workshop Manual199,00 UAH
Land Rover Range Rover — Electrical Library (LRL 0453ENG, 2002)
Workshop Manual199,00 UAH
Your experience will help others
+100 karma for a short comment :)
Was this AI description helpful?
Your feedback helps improve AI descriptions.
👍 Like
0
👎 Dislike
0
Send to email