P2746 — Intermediate Shaft Speed Sensor B Circuit Range/Performance

OBD2 code P2746 flags a problem with the sensor and actuator circuits (intermediate shaft speed sensor b circuit range/performance). The car is usually drivable while you plan the repair. Common culprits: faulty sensor or actuator of the affected circuit, poor ground connection, corroded, loose or damaged connector.

powertrain (engine/transmission)

Is it safe to drive?

Short-term driving is OK In most cases the car remains drivable, possibly with reduced performance or a disabled auxiliary system. If symptoms include stalling, no-start or brake/steering warnings, treat it as urgent.

How to diagnose with an OBD scanner

  1. Read the code and freeze frame Connect an OBD2 scanner, confirm P2746 is stored, and save the freeze frame data — it shows engine conditions when the fault was detected.
  2. Check for companion codes and TSBs Related codes often reveal the real root cause. Also check manufacturer technical service bulletins (TSB) for your make and model — many P0xxx issues have factory fixes or software updates. Search by VIN on the manufacturer site or nhtsa.gov.
  3. Inspect wiring and connectors Visually inspect the wiring harness and connectors related to the intermediate shaft speed sensor b for damage, corrosion, chafing or poor contact.
  4. Subsystem check Compare the intermediate shaft speed sensor b live reading against a known-good reference (specification or a correlated sensor) under the conditions from the freeze frame.
  5. Subsystem check Measure reference voltage, ground and signal continuity at the component connector.
  6. Subsystem check Wiggle-test the harness while watching the signal in live data — dropouts reveal broken wires.
  7. Verify the repair Clear the code, complete a full drive cycle including the conditions from the freeze frame, and confirm P2746 does not return.

Approximate repair cost

Repair cost depends on which component actually failed. Typical scenarios for P2746 (parts and labor, USD, independent shop rates): Control module repair: $300–$1,000; Replace the faulty sensor or actuator: $150–$500; Repair wiring or connectors: $80–$250. Overall, fixing P2746 usually costs between $80 and $1,000. An accurate diagnosis before buying parts saves money — the most expensive scenario is rarely the first one to check.

Common questions

Will P2746 clear itself?

Sometimes P2746 clears after a few drive cycles if the fault was intermittent — for example a loose connector or a tank of bad fuel. The underlying cause usually remains, so the code tends to return. Clear it once; if it comes back, diagnose rather than erase it repeatedly.

Is it safe to drive with P2746?

In most cases the car remains drivable, possibly with reduced performance or a disabled auxiliary system. If symptoms include stalling, no-start or brake/steering warnings, treat it as urgent.

What is the most common cause of P2746?

The most common causes are: faulty sensor or actuator of the affected circuit, poor ground connection, corroded, loose or damaged connector.

How much does it cost to fix P2746?

Control module repair — $300–$1,000; Replace the faulty sensor or actuator — $150–$500; Repair wiring or connectors — $80–$250. Exact cost depends on the root cause, your vehicle and local labor rates — a proper diagnosis is the cheapest first step.

How do I diagnose P2746 myself?

Start with a scan: confirm P2746, save the freeze frame and note any companion codes. Then inspect the wiring and connectors related to the intermediate shaft speed sensor b, and verify the suspect component against live data before buying parts.

What does P2746 mean?

P2746 (Intermediate Shaft Speed Sensor B Circuit Range/Performance) is stored when self-diagnostics detect abnormal readings or behaviour of the sensor and actuator circuits. It belongs to the powertrain (engine/transmission) category.

“Range/performance” means the signal from the intermediate shaft speed sensor b is electrically valid but does not match what the module expects for current operating conditions. The wiring is usually intact; the problem is a degraded component, a drifted sensor or a mechanical fault upstream.

To set P2746, the control module compares live readings of the sensor and actuator circuits against calibrated limits, usually over several drive cycles. Alongside the code it stores a freeze frame — a snapshot of rpm, load, coolant temperature and vehicle speed at the moment of failure. Reading that snapshot first saves diagnostic time.

What causes P2746?

  • incorrect calibration after a module update or battery disconnect
  • degraded or drifting intermediate shaft speed sensor b
  • mechanical fault that the sensor correctly reports
  • blown fuse feeding the circuit
  • poor ground connection
  • open or shorted wiring in the circuit
  • control module driver fault
  • corroded, loose or damaged connector

Common symptoms of P2746

  • possible limp mode depending on the affected component
  • increased fuel consumption in some cases
  • Check Engine Light on
  • the affected system operates intermittently or not at all

How to diagnose P2746

  1. Connect an OBD2 scanner, confirm P2746 is stored, and save the freeze frame data — it shows engine conditions when the fault was detected.
  2. Related codes often reveal the real root cause. Also check manufacturer technical service bulletins (TSB) for your make and model — many P0xxx issues have factory fixes or software updates. Search by VIN on the manufacturer site or nhtsa.gov.
  3. Visually inspect the wiring harness and connectors related to the intermediate shaft speed sensor b for damage, corrosion, chafing or poor contact.
  4. Compare the intermediate shaft speed sensor b live reading against a known-good reference (specification or a correlated sensor) under the conditions from the freeze frame.
  5. Measure reference voltage, ground and signal continuity at the component connector.
  6. Wiggle-test the harness while watching the signal in live data — dropouts reveal broken wires.
  7. Clear the code, complete a full drive cycle including the conditions from the freeze frame, and confirm P2746 does not return.

How to fix P2746

Start with the cheapest and most common causes before replacing expensive parts:

  • Control module repair — $300–$1,000
  • Replace the faulty sensor or actuator — $150–$500
  • Repair wiring or connectors — $80–$250

How much does it cost to fix P2746?

Repair cost depends on which component actually failed. Typical scenarios for P2746 (parts and labor, USD, independent shop rates):

  • Control module repair: $300–$1,000
  • Replace the faulty sensor or actuator: $150–$500
  • Repair wiring or connectors: $80–$250

Overall, fixing P2746 usually costs between $80 and $1,000. An accurate diagnosis before buying parts saves money — the most expensive scenario is rarely the first one to check.

Can you drive with P2746?

In most cases the car remains drivable, possibly with reduced performance or a disabled auxiliary system. If symptoms include stalling, no-start or brake/steering warnings, treat it as urgent.

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