Toggle Side Panel

Shopping Cart

No products in the basket.

Shopping Cart

No products in the basket.

Close search
Home / DTC / B1456 — RL side analog G sensor fail

B1456 — RL side analog G sensor fail

Detailed page for trouble code B1456.

34,405codes
59brands
11,914generic
22,491specific
All codes P-codes (Powertrain) B-codes (Body) C-codes (Chassis) U-codes (Network/User) Tesla Alerts
Reset
Code

B1456

MITSUBISHI B — Body

RL side analog G sensor fail

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

Causes

  • Faulty RL analog G sensor (internal failure)
  • Open or short in sensor wiring (power, ground, signal)
  • Poor or corroded connector or pin contact
  • Incorrect reference supply or ground at sensor
  • Faulty vehicle dynamics / body control ECU input circuit
  • Sensor not calibrated or configuration/coding error after replacement

Symptoms

  • ABS/ESC/VDC/stability control warning lamp illuminated
  • Reduced or disabled traction/stability control interventions
  • Stored B1456 (and possibly related) DTC(s)
  • Vehicle handling warnings or altered dynamic behavior messages
  • Noisy/misleading lateral acceleration readings in live-data

What to check

  • Read and record all stored DTCs and freeze frame data with a capable scan tool
  • Visually inspect sensor, mounting and wiring harness for damage, corrosion, water intrusion, or loose fasteners
  • Check connector terminals for corrosion, bent pins or poor contact; reseat connector
  • Measure sensor supply (reference) voltage and ground at the sensor connector with ignition ON
  • Measure sensor output voltage at rest and while applying a known lateral/tilt input (tilt or gently rock vehicle)
  • Wiggle test harness while watching live data for intermittent faults

Signal parameters

  • Sensor supply (reference) voltage: typically near 5 V (manufacturer specification required)
  • Sensor ground:
  • Sensor output voltage at rest: approximately mid-supply (~2.5 V typical) — consult service manual for exact value
  • Sensor output should change smoothly with vehicle tilt or applied lateral force (voltage shift of several hundred mV expected)
  • Open-circuit: signal may float, read near 0 V or battery voltage; short to ground ~0 V; short to VCC ~VCC

Diagnostic algorithm

  1. Use a scan tool to confirm B1456 is present; note freeze frame/live-data values for the RL G sensor channel.
  2. Clear codes, perform a road or tilt test while monitoring live sensor output. Observe whether code returns and how the signal behaves.
  3. Perform a visual inspection of the RL sensor, mounting hardware and harness. Repair any obvious mechanical damage or corrosion.
  4. With ignition ON (engine off), back-probe the sensor connector: verify reference voltage, ground continuity, and static output voltage. Compare to spec.
  5. If reference or ground is missing or out of range, trace and repair wiring to power/ground/ECU. Perform continuity and short-to-power/ground checks.
  6. If supply and ground are good but the output is out-of-range, replace the RL analog G sensor and re-test.
  7. After replacement, perform any required sensor zero/offset calibration or ECU initialization per service manual.
  8. If fault persists after sensor replacement, check input circuit at vehicle dynamics/body control ECU and consider ECU diagnostics or replacement.
  9. Retest vehicle under normal operating conditions to confirm repair and clear stored codes.

Likely causes

  • Damaged wiring or connector at RL G sensor (water ingress, chafing)
  • Failed sensor element (output stuck, drifting or out-of-range voltage)
  • Loss of sensor reference voltage or ground at the sensor connector
  • Intermittent connector contact due to corrosion or deformation
  • Aftermarket work or collision damage affecting harness

Fault status

⚠️ Status
RL analog G sensor signal out of range / open / short detected. Possible sensor or wiring fault — check sensor, connector, reference voltage and ECU input.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-3.0 hours

Similar codes

B1455 B1457 B1458 B1459 U0121
406

Browse 406 MITSUBISHI manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.

MITSUBISHI

Your experience will help others
+100 karma for a short comment :)
Keep it short and practical. Up to 500 characters.
Send to email
Code

B1456

Other B — Body

Wiper Washer Fluid Lamp Circuit Short To Battery

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

Causes

  • Faulty RL analog G sensor (internal failure)
  • Open or short in sensor wiring (power, ground, signal)
  • Poor or corroded connector or pin contact
  • Incorrect reference supply or ground at sensor
  • Faulty vehicle dynamics / body control ECU input circuit
  • Sensor not calibrated or configuration/coding error after replacement

Symptoms

  • ABS/ESC/VDC/stability control warning lamp illuminated
  • Reduced or disabled traction/stability control interventions
  • Stored B1456 (and possibly related) DTC(s)
  • Vehicle handling warnings or altered dynamic behavior messages
  • Noisy/misleading lateral acceleration readings in live-data

What to check

  • Read and record all stored DTCs and freeze frame data with a capable scan tool
  • Visually inspect sensor, mounting and wiring harness for damage, corrosion, water intrusion, or loose fasteners
  • Check connector terminals for corrosion, bent pins or poor contact; reseat connector
  • Measure sensor supply (reference) voltage and ground at the sensor connector with ignition ON
  • Measure sensor output voltage at rest and while applying a known lateral/tilt input (tilt or gently rock vehicle)
  • Wiggle test harness while watching live data for intermittent faults

Signal parameters

  • Sensor supply (reference) voltage: typically near 5 V (manufacturer specification required)
  • Sensor ground:
  • Sensor output voltage at rest: approximately mid-supply (~2.5 V typical) — consult service manual for exact value
  • Sensor output should change smoothly with vehicle tilt or applied lateral force (voltage shift of several hundred mV expected)
  • Open-circuit: signal may float, read near 0 V or battery voltage; short to ground ~0 V; short to VCC ~VCC

Diagnostic algorithm

  1. Use a scan tool to confirm B1456 is present; note freeze frame/live-data values for the RL G sensor channel.
  2. Clear codes, perform a road or tilt test while monitoring live sensor output. Observe whether code returns and how the signal behaves.
  3. Perform a visual inspection of the RL sensor, mounting hardware and harness. Repair any obvious mechanical damage or corrosion.
  4. With ignition ON (engine off), back-probe the sensor connector: verify reference voltage, ground continuity, and static output voltage. Compare to spec.
  5. If reference or ground is missing or out of range, trace and repair wiring to power/ground/ECU. Perform continuity and short-to-power/ground checks.
  6. If supply and ground are good but the output is out-of-range, replace the RL analog G sensor and re-test.
  7. After replacement, perform any required sensor zero/offset calibration or ECU initialization per service manual.
  8. If fault persists after sensor replacement, check input circuit at vehicle dynamics/body control ECU and consider ECU diagnostics or replacement.
  9. Retest vehicle under normal operating conditions to confirm repair and clear stored codes.

Likely causes

  • Damaged wiring or connector at RL G sensor (water ingress, chafing)
  • Failed sensor element (output stuck, drifting or out-of-range voltage)
  • Loss of sensor reference voltage or ground at the sensor connector
  • Intermittent connector contact due to corrosion or deformation
  • Aftermarket work or collision damage affecting harness

Fault status

⚠️ Status
RL analog G sensor signal out of range / open / short detected. Possible sensor or wiring fault — check sensor, connector, reference voltage and ECU input.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-3.0 hours

Similar codes

B1455 B1457 B1458 B1459 U0121
8,116

The library contains 8,116 repair and diagnostic manuals. Choose a brand to open the full manual tree by year, model and trim.

ALFA ROMEO
89
AUDI
1,160
BMW
479
CHEVROLET
434
DAEWOO
75
FIAT
26
GENESIS
207
HUMMER
138
HYUNDAI
371
ISUZU
86
LAND ROVER
320
LEXUS
280
LINCOLN
166
MERCEDES-BENZ
856
MERCURY
296
MITSUBISHI
406
PORSCHE
136
TESLA
58
TOYOTA
2,042
TRIUMPH
131
VOLKSWAGEN
139
VOLVO
221
Your experience will help others
+100 karma for a short comment :)
Keep it short and practical. Up to 500 characters.
Send to email

Report

Harassment or bullying behavior
Contains mature or sensitive content
Contains misleading or false information
Contains abusive or derogatory content
Contains spam, fake content or potential malware

Block Member?

Please confirm you want to block this member.

You will no longer be able to:

  • See blocked member's posts
  • Mention this member in posts
  • Invite this member to groups
  • Message this member
  • Add this member as a connection

Please note: This action will also remove this member from your connections and send a report to the site admin. Please allow a few minutes for this process to complete.

Report

You have already reported this .