Code
U1103
HYUNDAI
U — Network/User
Lost Communication With TGS Lever
Views:
UK: 11
EN: 37
RU: 18
AI status
Completed
Completed
100%
Causes
- Damaged or disconnected wiring between TGS lever and control module
- Corroded or loose connector pins at TGS lever or harness junctions
- Blown fuse or lost power/ground to the TGS circuit
- Faulty TGS lever sensor or internal module failure
- CAN/LIN bus fault or high bus error rate (short to ground/voltage, open, or excessive interference)
- Intermittent wiring fault (chafing, pinched cable)
Symptoms
- Malfunction Indicator Light (MIL) or network warning may illuminate
- Loss of TGS-related functionality (gear/shift/transfer operation limited or in limp mode)
- Transmission or shift lever may not respond or may default to a safe gear
- Intermittent or permanent faults stored in other modules that rely on TGS data
- Possible erratic or frozen lever position reading in live data
What to check
- Read all current and stored network and module DTCs with a capable scan tool; capture freeze frame and event history
- Verify battery voltage is within specification (typically 12–14.5 V) before diagnostics
- Inspect relevant fuses and power distribution for TGS and related modules
- Visually inspect connectors and wiring at the TGS lever assembly and associated junctions for corrosion, damage, or loose pins
- Check grounds for tightness and corrosion at chassis and module ground points
- Use scan tool to view live data: TGS lever position/availability and network message presence
Signal parameters
- Power supply: typically battery voltage when key on (approx. 12 V) to module Vb circuit
- Ground: near 0 V with good chassis ground
- Analog position sensor (if applicable): variable voltage ~0.5–4.5 V across lever travel (model-dependent)
- Digital bus: CAN BUS differential idle ~2.5 V on both CAN H and CAN L (CAN H ~2.5–3.5 V, CAN L ~1.5–2.5 V)
- Message rate: TGS messages expected at regular intervals (tens to hundreds of milliseconds) — absence or high error rate indicates communication loss
- Resistance: continuity between connector pins and module should be low (near 0 ohms) with no short to ground or battery
Diagnostic algorithm
- Connect a compatible scan tool; record U1103 and any related codes and freeze-frame data
- Verify battery voltage; if low, charge battery before continuing
- Inspect fuses and power/ground at the fuse box and at the TGS module/lever connector
- Visually inspect TGS lever connector and wiring for damage, corrosion, bent pins; disconnect and inspect mating surfaces
- With ignition ON, monitor live data for TGS lever position and network status. Note if data is absent or intermittent
- Measure supply voltage and ground at the TGS connector with a multimeter. If supply or ground missing, trace and repair power/ground circuit
- If the TGS uses an analog sensor, backprobe signal wire and measure voltage across lever travel; compare to expected range. If out of range, suspect sensor or wiring
- If the TGS communicates over CAN/LIN, measure bus voltages at a known good connector and at the TGS connector; check for shorts or opens and compare to expected idle voltages
- Perform continuity and short-to-power/ground tests on the harness between the TGS and the controlling module; repair any opens or shorts
- If wiring and power/ground are good but communication is lost, swap or bench-test the TGS lever module if a bench procedure exists, or substitute a known-good module where possible
- Check for software updates or technical service bulletins; reflash/update module software when recommended
- After repairs, clear codes and confirm normal operation by monitoring live data and performing a functional test/road test. Re-scan for returned codes
Likely causes
- Connector corrosion or bent pins at TGS lever
- Broken/shorted wire in harness to transmission/shift lever area
- No supply voltage or poor ground to TGS module
- Failed TGS lever position sensor
- Local CAN/LIN wiring short or open causing message loss
Fault status
Status
Lost Communication With TGS Lever — the control network is not receiving expected messages or signals from the TGS lever assembly. This can be caused by wiring/connectivity issues, failed sensor/module, or bus faults.
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
U1103
MITSUBISHI
U — Network/User
PDC CAN timeout/Not equipped
Views:
UK: 11
EN: 20
RU: 11
AI status
Completed
Completed
100%
Causes
- Damaged or disconnected wiring between TGS lever and control module
- Corroded or loose connector pins at TGS lever or harness junctions
- Blown fuse or lost power/ground to the TGS circuit
- Faulty TGS lever sensor or internal module failure
- CAN/LIN bus fault or high bus error rate (short to ground/voltage, open, or excessive interference)
- Intermittent wiring fault (chafing, pinched cable)
Symptoms
- Malfunction Indicator Light (MIL) or network warning may illuminate
- Loss of TGS-related functionality (gear/shift/transfer operation limited or in limp mode)
- Transmission or shift lever may not respond or may default to a safe gear
- Intermittent or permanent faults stored in other modules that rely on TGS data
- Possible erratic or frozen lever position reading in live data
What to check
- Read all current and stored network and module DTCs with a capable scan tool; capture freeze frame and event history
- Verify battery voltage is within specification (typically 12–14.5 V) before diagnostics
- Inspect relevant fuses and power distribution for TGS and related modules
- Visually inspect connectors and wiring at the TGS lever assembly and associated junctions for corrosion, damage, or loose pins
- Check grounds for tightness and corrosion at chassis and module ground points
- Use scan tool to view live data: TGS lever position/availability and network message presence
Signal parameters
- Power supply: typically battery voltage when key on (approx. 12 V) to module Vb circuit
- Ground: near 0 V with good chassis ground
- Analog position sensor (if applicable): variable voltage ~0.5–4.5 V across lever travel (model-dependent)
- Digital bus: CAN BUS differential idle ~2.5 V on both CAN H and CAN L (CAN H ~2.5–3.5 V, CAN L ~1.5–2.5 V)
- Message rate: TGS messages expected at regular intervals (tens to hundreds of milliseconds) — absence or high error rate indicates communication loss
- Resistance: continuity between connector pins and module should be low (near 0 ohms) with no short to ground or battery
Diagnostic algorithm
- Connect a compatible scan tool; record U1103 and any related codes and freeze-frame data
- Verify battery voltage; if low, charge battery before continuing
- Inspect fuses and power/ground at the fuse box and at the TGS module/lever connector
- Visually inspect TGS lever connector and wiring for damage, corrosion, bent pins; disconnect and inspect mating surfaces
- With ignition ON, monitor live data for TGS lever position and network status. Note if data is absent or intermittent
- Measure supply voltage and ground at the TGS connector with a multimeter. If supply or ground missing, trace and repair power/ground circuit
- If the TGS uses an analog sensor, backprobe signal wire and measure voltage across lever travel; compare to expected range. If out of range, suspect sensor or wiring
- If the TGS communicates over CAN/LIN, measure bus voltages at a known good connector and at the TGS connector; check for shorts or opens and compare to expected idle voltages
- Perform continuity and short-to-power/ground tests on the harness between the TGS and the controlling module; repair any opens or shorts
- If wiring and power/ground are good but communication is lost, swap or bench-test the TGS lever module if a bench procedure exists, or substitute a known-good module where possible
- Check for software updates or technical service bulletins; reflash/update module software when recommended
- After repairs, clear codes and confirm normal operation by monitoring live data and performing a functional test/road test. Re-scan for returned codes
Likely causes
- Connector corrosion or bent pins at TGS lever
- Broken/shorted wire in harness to transmission/shift lever area
- No supply voltage or poor ground to TGS module
- Failed TGS lever position sensor
- Local CAN/LIN wiring short or open causing message loss
Fault status
Status
Lost Communication With TGS Lever — the control network is not receiving expected messages or signals from the TGS lever assembly. This can be caused by wiring/connectivity issues, failed sensor/module, or bus faults.
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
U1103
Other
U — Network/User
SCP (J1850) Invalid or Missing Data for Primary Id
Views:
UK: 22
EN: 31
RU: 17
AI status
Completed
Completed
100%
Causes
- Damaged or disconnected wiring between TGS lever and control module
- Corroded or loose connector pins at TGS lever or harness junctions
- Blown fuse or lost power/ground to the TGS circuit
- Faulty TGS lever sensor or internal module failure
- CAN/LIN bus fault or high bus error rate (short to ground/voltage, open, or excessive interference)
- Intermittent wiring fault (chafing, pinched cable)
Symptoms
- Malfunction Indicator Light (MIL) or network warning may illuminate
- Loss of TGS-related functionality (gear/shift/transfer operation limited or in limp mode)
- Transmission or shift lever may not respond or may default to a safe gear
- Intermittent or permanent faults stored in other modules that rely on TGS data
- Possible erratic or frozen lever position reading in live data
What to check
- Read all current and stored network and module DTCs with a capable scan tool; capture freeze frame and event history
- Verify battery voltage is within specification (typically 12–14.5 V) before diagnostics
- Inspect relevant fuses and power distribution for TGS and related modules
- Visually inspect connectors and wiring at the TGS lever assembly and associated junctions for corrosion, damage, or loose pins
- Check grounds for tightness and corrosion at chassis and module ground points
- Use scan tool to view live data: TGS lever position/availability and network message presence
Signal parameters
- Power supply: typically battery voltage when key on (approx. 12 V) to module Vb circuit
- Ground: near 0 V with good chassis ground
- Analog position sensor (if applicable): variable voltage ~0.5–4.5 V across lever travel (model-dependent)
- Digital bus: CAN BUS differential idle ~2.5 V on both CAN H and CAN L (CAN H ~2.5–3.5 V, CAN L ~1.5–2.5 V)
- Message rate: TGS messages expected at regular intervals (tens to hundreds of milliseconds) — absence or high error rate indicates communication loss
- Resistance: continuity between connector pins and module should be low (near 0 ohms) with no short to ground or battery
Diagnostic algorithm
- Connect a compatible scan tool; record U1103 and any related codes and freeze-frame data
- Verify battery voltage; if low, charge battery before continuing
- Inspect fuses and power/ground at the fuse box and at the TGS module/lever connector
- Visually inspect TGS lever connector and wiring for damage, corrosion, bent pins; disconnect and inspect mating surfaces
- With ignition ON, monitor live data for TGS lever position and network status. Note if data is absent or intermittent
- Measure supply voltage and ground at the TGS connector with a multimeter. If supply or ground missing, trace and repair power/ground circuit
- If the TGS uses an analog sensor, backprobe signal wire and measure voltage across lever travel; compare to expected range. If out of range, suspect sensor or wiring
- If the TGS communicates over CAN/LIN, measure bus voltages at a known good connector and at the TGS connector; check for shorts or opens and compare to expected idle voltages
- Perform continuity and short-to-power/ground tests on the harness between the TGS and the controlling module; repair any opens or shorts
- If wiring and power/ground are good but communication is lost, swap or bench-test the TGS lever module if a bench procedure exists, or substitute a known-good module where possible
- Check for software updates or technical service bulletins; reflash/update module software when recommended
- After repairs, clear codes and confirm normal operation by monitoring live data and performing a functional test/road test. Re-scan for returned codes
Likely causes
- Connector corrosion or bent pins at TGS lever
- Broken/shorted wire in harness to transmission/shift lever area
- No supply voltage or poor ground to TGS module
- Failed TGS lever position sensor
- Local CAN/LIN wiring short or open causing message loss
Fault status
Status
Lost Communication With TGS Lever — the control network is not receiving expected messages or signals from the TGS lever assembly. This can be caused by wiring/connectivity issues, failed sensor/module, or bus faults.
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 ManualAudi A3 (1997) – 1.6L 4-cylinder (2‑valve) Engine Mechanical Components Service Manual (AEH, AKL, APF) – Edition 07.2002
Workshop ManualAUDI A3 (2004) Workshop Manual — 2.0L FSI Turbo (4‑cyl, 4‑valve) Engine, Mechanics — Edition 03.2017
Workshop ManualAudi A3 2004 — Electrical System (Workshop Manual, Edition 02.2018)
Workshop ManualAudi A4 / A4 Cabriolet – 4.2 l V8 (5‑valve, timing chains) – Workshop Manual (Mechanics) – Edition 04.2007
Workshop ManualAudi A4 / A4 Cabriolet — Auxiliary Heater Workshop Manual (Edition 08.2004)
Workshop ManualAudi A4 / A4 Cabriolet (1.8T 4‑cyl turbo) — Motronic Injection & Ignition System Service Manual (Edition 01.2015)
Workshop ManualAudi A8 (2003) — Electrical System Workshop Manual (Edition 08.2014)
Workshop ManualAudi Q4 e-tron (Type F4) - Self-study Programme SSP 685
Workshop ManualAudi Q8 (2018) — Electrical System Workshop Manual (Edition 05.2019)
Workshop ManualAudi Servicing Manual — 7‑Speed Dual Clutch Transmission 0CJ / 0CL / 0CK / 0DN / 0DP / 0HL (Edition 05.2018)
Workshop ManualLAND ROVER 3
Land Rover Defender 300Tdi — Workshop Manual (1996 model year)
Workshop ManualLand Rover Defender Workshop Manual Supplement & Body Repair Manual (1999 & 2002 MY)
Workshop ManualLand Rover Range Rover — Electrical Library (LRL 0453ENG, 2002)
Workshop ManualYour 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