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Home / DTC / B1297 — Electrical supply sensor circuit open

B1297 — Electrical supply sensor circuit open

Detailed page for trouble code B1297.

35,025codes
59brands
11,925generic
23,100specific
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Code

B1297

ALFA ROMEO B — Body

Electrical supply sensor circuit open

Brand: ALFA ROMEO
Type: B — Body
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Broken or disconnected wiring in the sensor supply circuit
  • Corroded, loose or damaged connector pins at the sensor or module
  • Blown fuse or fusible link feeding the sensor circuit
  • Faulty sensor (internal open)
  • Faulty ground, poor chassis/ground connection
  • Faulty body control module (BCM) or sensor power driver

Symptoms

  • DTC B1297 stored; possible related system malfunction (depends on which sensor is affected)
  • Loss of function of the device that uses that sensor (e.g., comfort/vehicle body feature)
  • Intermittent operation or complete failure of the associated feature
  • Possible warning lamp or message on instrument cluster (model dependent)

What to check

  • Read and record all stored codes and freeze frame data with a compatible scanner
  • Perform a visual inspection of the sensor, connector and wiring harness for damage, corrosion, chafing or pinback
  • Check relevant fuses and fusible links for continuity and correct rating
  • Backprobe the sensor connector with key ON (engine OFF) and measure supply voltage and ground
  • Perform a continuity check between the sensor supply pin and the module fuse/connector with harness disconnected
  • Wiggle test wiring & connectors while observing live data or fault status for intermittent opens

Signal parameters

  • Sensor supply voltage: typically battery voltage when key ON (~11–14 V) on 12 V systems; may be switched by a fuse or module
  • Reference/signal line (if applicable): commonly 5 V reference for many sensors; open circuit will show 0 V or floating
  • Open circuit indication: very high resistance / infinite continuity from supply pin to source or no voltage at sensor connector
  • Ground continuity: near 0 Ω between sensor ground and chassis ground when connector disconnected

Diagnostic algorithm

  1. Use a scan tool to confirm B1297 is set and note any related codes that identify which sensor/circuit is affected.
  2. Visually inspect the harness, sensor connector and nearby components for damage, corrosion or repairs.
  3. Check relevant fuses and replace if blown; recheck for the code after clearing.
  4. With key ON (engine OFF), backprobe the sensor supply pin: verify expected supply voltage (battery voltage or module‑switched voltage).
  5. If no supply, trace continuity from the sensor supply pin back to the fuse and module; repair any open splice, broken wire or connector fault.
  6. If supply is present but module reports open, disconnect sensor and measure resistance of the sensor supply/internal circuit to check for internal open; replace sensor if open.
  7. Check ground continuity from sensor ground pin to chassis ground and repair as needed.
  8. If harness and sensor check good, inspect/replace the control module power driver or the control module as a last resort — confirm with module bench test or known‑good module when possible.
  9. After repairs, clear codes, perform functional tests and verify the code does not return under normal conditions.

Likely causes

  • Open/disconnected supply wire to the sensor
  • Corroded or pushed‑out connector pin at the sensor
  • Blown fuse protecting the sensor supply
  • Internal failure in the sensor leading to open circuit

Fault status

⚠️ Status
Stored fault — control unit detected an open/high‑impedance condition in the electrical supply circuit to the sensor. The condition may be current or intermittent; related system may be disabled until fault is corrected.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-2.0 hours

Similar codes

B1296 B1298 B1299 B1000 U1000
89

Browse 89 ALFA ROMEO manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.

ALFA ROMEO

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Code

B1297

FIAT B — Body

Electrical supply sensor circuit open

Brand: FIAT
Type: B — Body
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Broken or disconnected wiring in the sensor supply circuit
  • Corroded, loose or damaged connector pins at the sensor or module
  • Blown fuse or fusible link feeding the sensor circuit
  • Faulty sensor (internal open)
  • Faulty ground, poor chassis/ground connection
  • Faulty body control module (BCM) or sensor power driver

Symptoms

  • DTC B1297 stored; possible related system malfunction (depends on which sensor is affected)
  • Loss of function of the device that uses that sensor (e.g., comfort/vehicle body feature)
  • Intermittent operation or complete failure of the associated feature
  • Possible warning lamp or message on instrument cluster (model dependent)

What to check

  • Read and record all stored codes and freeze frame data with a compatible scanner
  • Perform a visual inspection of the sensor, connector and wiring harness for damage, corrosion, chafing or pinback
  • Check relevant fuses and fusible links for continuity and correct rating
  • Backprobe the sensor connector with key ON (engine OFF) and measure supply voltage and ground
  • Perform a continuity check between the sensor supply pin and the module fuse/connector with harness disconnected
  • Wiggle test wiring & connectors while observing live data or fault status for intermittent opens

Signal parameters

  • Sensor supply voltage: typically battery voltage when key ON (~11–14 V) on 12 V systems; may be switched by a fuse or module
  • Reference/signal line (if applicable): commonly 5 V reference for many sensors; open circuit will show 0 V or floating
  • Open circuit indication: very high resistance / infinite continuity from supply pin to source or no voltage at sensor connector
  • Ground continuity: near 0 Ω between sensor ground and chassis ground when connector disconnected

Diagnostic algorithm

  1. Use a scan tool to confirm B1297 is set and note any related codes that identify which sensor/circuit is affected.
  2. Visually inspect the harness, sensor connector and nearby components for damage, corrosion or repairs.
  3. Check relevant fuses and replace if blown; recheck for the code after clearing.
  4. With key ON (engine OFF), backprobe the sensor supply pin: verify expected supply voltage (battery voltage or module‑switched voltage).
  5. If no supply, trace continuity from the sensor supply pin back to the fuse and module; repair any open splice, broken wire or connector fault.
  6. If supply is present but module reports open, disconnect sensor and measure resistance of the sensor supply/internal circuit to check for internal open; replace sensor if open.
  7. Check ground continuity from sensor ground pin to chassis ground and repair as needed.
  8. If harness and sensor check good, inspect/replace the control module power driver or the control module as a last resort — confirm with module bench test or known‑good module when possible.
  9. After repairs, clear codes, perform functional tests and verify the code does not return under normal conditions.

Likely causes

  • Open/disconnected supply wire to the sensor
  • Corroded or pushed‑out connector pin at the sensor
  • Blown fuse protecting the sensor supply
  • Internal failure in the sensor leading to open circuit

Fault status

⚠️ Status
Stored fault — control unit detected an open/high‑impedance condition in the electrical supply circuit to the sensor. The condition may be current or intermittent; related system may be disabled until fault is corrected.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-2.0 hours

Similar codes

B1296 B1298 B1299 B1000 U1000
Repair manuals

Manual library for FIAT

26

Browse 26 FIAT manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.

FIAT

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Code

B1297

LAND ROVER B — Body

Power Supply Sensor - circuit failure

Brand: LAND ROVER
Type: B — Body
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Broken or disconnected wiring in the sensor supply circuit
  • Corroded, loose or damaged connector pins at the sensor or module
  • Blown fuse or fusible link feeding the sensor circuit
  • Faulty sensor (internal open)
  • Faulty ground, poor chassis/ground connection
  • Faulty body control module (BCM) or sensor power driver

Symptoms

  • DTC B1297 stored; possible related system malfunction (depends on which sensor is affected)
  • Loss of function of the device that uses that sensor (e.g., comfort/vehicle body feature)
  • Intermittent operation or complete failure of the associated feature
  • Possible warning lamp or message on instrument cluster (model dependent)

What to check

  • Read and record all stored codes and freeze frame data with a compatible scanner
  • Perform a visual inspection of the sensor, connector and wiring harness for damage, corrosion, chafing or pinback
  • Check relevant fuses and fusible links for continuity and correct rating
  • Backprobe the sensor connector with key ON (engine OFF) and measure supply voltage and ground
  • Perform a continuity check between the sensor supply pin and the module fuse/connector with harness disconnected
  • Wiggle test wiring & connectors while observing live data or fault status for intermittent opens

Signal parameters

  • Sensor supply voltage: typically battery voltage when key ON (~11–14 V) on 12 V systems; may be switched by a fuse or module
  • Reference/signal line (if applicable): commonly 5 V reference for many sensors; open circuit will show 0 V or floating
  • Open circuit indication: very high resistance / infinite continuity from supply pin to source or no voltage at sensor connector
  • Ground continuity: near 0 Ω between sensor ground and chassis ground when connector disconnected

Diagnostic algorithm

  1. Use a scan tool to confirm B1297 is set and note any related codes that identify which sensor/circuit is affected.
  2. Visually inspect the harness, sensor connector and nearby components for damage, corrosion or repairs.
  3. Check relevant fuses and replace if blown; recheck for the code after clearing.
  4. With key ON (engine OFF), backprobe the sensor supply pin: verify expected supply voltage (battery voltage or module‑switched voltage).
  5. If no supply, trace continuity from the sensor supply pin back to the fuse and module; repair any open splice, broken wire or connector fault.
  6. If supply is present but module reports open, disconnect sensor and measure resistance of the sensor supply/internal circuit to check for internal open; replace sensor if open.
  7. Check ground continuity from sensor ground pin to chassis ground and repair as needed.
  8. If harness and sensor check good, inspect/replace the control module power driver or the control module as a last resort — confirm with module bench test or known‑good module when possible.
  9. After repairs, clear codes, perform functional tests and verify the code does not return under normal conditions.

Likely causes

  • Open/disconnected supply wire to the sensor
  • Corroded or pushed‑out connector pin at the sensor
  • Blown fuse protecting the sensor supply
  • Internal failure in the sensor leading to open circuit

Fault status

⚠️ Status
Stored fault — control unit detected an open/high‑impedance condition in the electrical supply circuit to the sensor. The condition may be current or intermittent; related system may be disabled until fault is corrected.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-2.0 hours

Similar codes

B1296 B1298 B1299 B1000 U1000
413

Browse 413 LAND ROVER manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.

LAND ROVER

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+100 karma for a short comment :)
Keep it short and practical. Up to 500 characters.
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Code

B1297

Other B — Body

Power Supply Sensor Circuit Open

Brand: Other
Type: B — Body
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Broken or disconnected wiring in the sensor supply circuit
  • Corroded, loose or damaged connector pins at the sensor or module
  • Blown fuse or fusible link feeding the sensor circuit
  • Faulty sensor (internal open)
  • Faulty ground, poor chassis/ground connection
  • Faulty body control module (BCM) or sensor power driver

Symptoms

  • DTC B1297 stored; possible related system malfunction (depends on which sensor is affected)
  • Loss of function of the device that uses that sensor (e.g., comfort/vehicle body feature)
  • Intermittent operation or complete failure of the associated feature
  • Possible warning lamp or message on instrument cluster (model dependent)

What to check

  • Read and record all stored codes and freeze frame data with a compatible scanner
  • Perform a visual inspection of the sensor, connector and wiring harness for damage, corrosion, chafing or pinback
  • Check relevant fuses and fusible links for continuity and correct rating
  • Backprobe the sensor connector with key ON (engine OFF) and measure supply voltage and ground
  • Perform a continuity check between the sensor supply pin and the module fuse/connector with harness disconnected
  • Wiggle test wiring & connectors while observing live data or fault status for intermittent opens

Signal parameters

  • Sensor supply voltage: typically battery voltage when key ON (~11–14 V) on 12 V systems; may be switched by a fuse or module
  • Reference/signal line (if applicable): commonly 5 V reference for many sensors; open circuit will show 0 V or floating
  • Open circuit indication: very high resistance / infinite continuity from supply pin to source or no voltage at sensor connector
  • Ground continuity: near 0 Ω between sensor ground and chassis ground when connector disconnected

Diagnostic algorithm

  1. Use a scan tool to confirm B1297 is set and note any related codes that identify which sensor/circuit is affected.
  2. Visually inspect the harness, sensor connector and nearby components for damage, corrosion or repairs.
  3. Check relevant fuses and replace if blown; recheck for the code after clearing.
  4. With key ON (engine OFF), backprobe the sensor supply pin: verify expected supply voltage (battery voltage or module‑switched voltage).
  5. If no supply, trace continuity from the sensor supply pin back to the fuse and module; repair any open splice, broken wire or connector fault.
  6. If supply is present but module reports open, disconnect sensor and measure resistance of the sensor supply/internal circuit to check for internal open; replace sensor if open.
  7. Check ground continuity from sensor ground pin to chassis ground and repair as needed.
  8. If harness and sensor check good, inspect/replace the control module power driver or the control module as a last resort — confirm with module bench test or known‑good module when possible.
  9. After repairs, clear codes, perform functional tests and verify the code does not return under normal conditions.

Likely causes

  • Open/disconnected supply wire to the sensor
  • Corroded or pushed‑out connector pin at the sensor
  • Blown fuse protecting the sensor supply
  • Internal failure in the sensor leading to open circuit

Fault status

⚠️ Status
Stored fault — control unit detected an open/high‑impedance condition in the electrical supply circuit to the sensor. The condition may be current or intermittent; related system may be disabled until fault is corrected.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-2.0 hours

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B1296 B1298 B1299 B1000 U1000
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