B2816

Code

OPEL B — Body

TPMS Switch Stuck

Brand: OPEL

Type: B — Body

Views: UK: 4 EN: 9 RU: 5

AI status

Completed

ready

Completed 100%

Page language: EN

Mechanical sticking or internal failure of the TPMS switch/button
Corroded, contaminated or damaged switch connector or wiring
Short to ground or short to battery on the switch circuit
Open circuit or intermittent wiring/connectors between switch and body control module (BCM)
Faulty BCM or TPMS control module input
Software/firmware glitch in BCM or instrument cluster

Read and record all TPMS and body module fault codes and freeze frame data with a capable scan tool
Operate the TPMS switch while watching live data (switch state) on the scan tool or CAN monitor
Visually inspect the switch, bezel and surrounding trim for binding, foreign material or damage
Inspect the switch connector for corrosion, bent pins, water ingress or loose terminals
Check fuse(s) related to BCM and TPMS circuits
Measure supply voltage and ground at the switch connector with key on (expected stable 5V or battery depending on design)

Switch state (digital): expected toggles between 0 and 1 when pressed — stuck code indicates constant state
Supply voltage at switch: typically ~5 V reference or vehicle battery voltage depending on design; should be stable with key on
Ground continuity: near 0 Ω between switch ground and chassis ground
Closed switch resistance: near 0 Ω (low) when actuated; open circuit when released
CAN or body bus data: message/parameter indicating switch state should change on operation
Current draw: very low in quiescent state; significant deviation may indicate short

Connect a diagnostic scanner and confirm B2816 plus any related stored codes; record freeze frame
Confirm symptom: repeatedly operate the TPMS switch and observe live data for switch state change
Visually inspect the switch assembly and surrounding trim for sticking, debris or damage; remove trim if needed
Disconnect switch connector and inspect pins for corrosion, bent pins or water; clean or replace connector as required
With connector disconnected, measure supply voltage and reference at the connector with ignition on to verify proper supply and ground
Measure continuity/resistance across the switch while actuating; replace switch if mechanical/electrical operation is not within expected limits
Perform a wiring continuity check between switch connector and BCM input pin; inspect for chafing or shorts to ground/battery if fault present
If wiring and switch check good, check BCM inputs with scope or scan tool; verify CAN network messages and BCM health
If BCM input is not responding or shows incorrect values despite good switch and wiring, consider BCM software update or replacement per manufacturer guidance
After repair or replacement, clear codes, verify proper operation of the switch via scanner and on-road/ignition checks; confirm no reappearance of the DTC

⚠️ Status

TPMS switch input stuck (no change of state)

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 0.5-1.5 hours

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