Data note
- NHTSA complaints: No NHTSA complaints found for this make/model/year/issue combination.
- Recalls: No recalls found in NHTSA database.
No recalls found in NHTSA database.
CODE MEANING AND SEVERITY
- What the code means: P0715 is "Input/Turbine Speed Sensor Circuit Malfunction" (also referred to as the transmission input speed sensor circuit). It indicates an abnormal signal or a fault in the circuit that provides the transmission’s turbine/input speed information to the transmission control module (TCM).
- What it does to the vehicle: Depending on the vehicle’s design and the TCM, P0715 can trigger limp-mode or shift-quality problems. The car may not offer full performance, may exhibit erratic or harsh shifting, or may fail to shift correctly at certain speeds. In some cases the MIL (check engine light) will illuminate, and a stored P0715 may be accompanied by other transmission-related codes (e.g., P0700 family codes).
- Severity for a 2016-2019 Chevrolet Cruze: Moderate to high. Since this relates to the transmission input speed signal, it can affect shifting and drivability. If not addressed, it may lead to more serious transmission concerns or strategic drivability limitations (and a potential loss of drive).
COMMON CAUSES ON CHEVROLET CRUZE
- Faulty input/turbine speed sensor (ISS/TSS) itself.
- Damaged or corroded sensor wiring harness or connectors (pinched, frayed, or water intrusion near the transmission).
- Poor or failed transmission ground or 5V reference supply to the sensor (voltage supply or ground intermittency).
- Faulty Transmission Control Module (TCM) or software/firmware issue (less common, but possible).
- Sensor tone ring or reluctor wheel damage or misalignment (less common but can affect sensor signal).
- Transmission fluid issues (low level, incorrect fluid type, or contaminated fluid) affecting sensor operation indirectly.
- Electrical faults elsewhere in the powertrain control network causing communication glitches to the TCM.
Note: With the current data provided, there are no specific NHTSA recall/TSB entries to cite for this issue.
SYMPTOMS
- Transmission hesitates or shifts unusually (hard shifts, irregular upshifts or downshifts).
- Inconsistent or no transmission speed reading in dashboard or in the scan tool live data for the transmission input speed sensor.
- MIL illumination with P0715 stored in the ECU/TCM.
- Possible limp-mode or limited drive capability (car may move but with restricted speed/gear).
- In some cases, other transmission codes may appear concurrently (e.g., P0700 or related speed sensor codes).
DIAGNOSTIC STEPS
Note: Follow standard safety practices. If the car is unable to be moved or you’re unsure, have it towed.
A. Prepare and initial checks
- Use an OBD-II scanner to confirm P0715 and note any freeze-frame data and any related codes (P0700, P0710, P0720, etc.). Record vehicle speed, rpm, transmission gear, and conditions when the code set.
- Inspect for obvious transmission fluid issues: level, coolant/antifreeze leaks near the transmission, fluid color, smell, and contamination.
- Check for recent service history (fluid change, transmission work) that could influence sensor wiring or harness connections.
B. Visual inspection
- Inspect the ISS/TSS sensor and its wiring harness at the transmission: look for damaged insulation, chafed wires, loose or corroded connectors, and signs of water intrusion.
- Check the transmission ground strap and the battery/engine grounds for corrosion or loose connections.
- Inspect the sensor mounting and proximity to metal components that could cause vibration damage or misalignment.
C. Electrical tests (use a multimeter/scan tool)
- Confirm the 5V reference to the ISS/TSS sensor (the sensor typically uses a 5V reference line, a signal line, and a ground). With ignition on (engine off), test for 5V reference at the sensor connector using the wiring diagram for your Cruze. If no reference voltage is present, diagnose the upstream control module or wiring harness.
- Check for continuity from the sensor connector to the TCM/PCM harness and ground. Look for short to ground or short to power.
- With the engine running or at least the ignition on, measure the sensor signal voltage or use a live data stream from a capable scan tool. The signal should vary with engine/transmission speed. If the signal is flat, erratic, or out of spec, the sensor or wiring is suspect.
- Sensor resistance check (when recommended by GM service information): remove the sensor and measure its resistance per GM specs. Compare against the specified range. A resistance out of range suggests a faulty sensor.
- Check for faults in related circuits: e.g., a faulty TCM or compromised CAN/bus communication could produce P0715 as a symptom rather than a single-point sensor fault.
D. Functional checks
- Road test and monitor live data: verify the ISS/TSS reading at various speeds, gears, and throttle positions. Note if readings correlate with actual sprocket/gear changes and if the TCM behaves consistently.
- If sensor data appears valid and wiring checks out, consider a software/TCM reflash or update (if GM has a published update). If you don’t have dealer-level access, you may need a professional to verify software status, as this can affect sensor interpretation.
E. Decisions based on findings
- If the sensor shows a fault or the circuit test fails, replace the ISS/TSS sensor and recheck.
- If wiring/connectors are damaged or corroded, repair or replace the harness/connector, ensuring proper grounds.
- If the TCM is suspected, consult a GM dealer or a transmission specialist for an assessment, as reprogramming or replacement may be necessary.
- If fluid is contaminated or incorrect, perform a transmission fluid service with the correct Dexron VI/GM-approved fluid, after ensuring the system is clean and free of contamination (note that this can be an involved service and may require a pan gasket replacement).
RELATED CODES
- Transmission input speed sensor circuit family codes commonly associated with speed sensor issues or transmission speed signal faults:
- P0710 Transmission Input Speed Sensor Circuit Malfunction
- P0711 Transmission Input Speed Sensor Circuit Range/Performance
- P0700 (Generic Transmission Control System Malfunction) — may appear when the TCM detects a fault.
- Other transmission-related codes that might appear if the issue affects the transmission control system:
- P0740 Torque Converter Clutch Circuit Malfunction (if the issue affects the torque converter control)
- P0720 Output Speed Sensor Circuit Malfunction
Note: The above are commonly encountered in the P07xx range related to transmission speed sensing, but actual code presence will depend on vehicle conditions and fault history.
REPAIR OPTIONS AND COSTS (2025 PRICES)
Prices vary by region and dealership vs independent shop. The ranges below reflect typical US market pricing as a guide.
Input/Turbine Speed Sensor replacement
- Parts: roughly $20–$120
- Labor: roughly 0.5–2.0 hours
- Total: approximately $100–$350
- Notes: If the sensor is the root cause, this is often the simplest and most cost-effective fix.
Transmission harness or connector repair/replacement (if wiring damage is found)
- Parts: $20–$150 (harness segment or connector)
- Labor: 1.0–3.0 hours
- Total: approximately $150–$800
- Notes: Wire harness issues can be intermittent and require careful inspection.
Transmission fluid service (if fluid is low, contaminated, or wrong spec)
- Fluid: Dexron VI or GM-approved fluid; cost typically $50–$120 for fluid
- Labor: 1.0–2.0 hours
- Total: approximately $150–$350
- Notes: Some Cruze transmissions require a controlled flush or pan service; follow GM spec.
Transmission control module (TCM) software update or reflash
- Parts: usually none or minimal (software)
- Labor: 0.5–1.5 hours at dealer or shop
- Total: approximately $0–$250 (or more if a dealer charges for software update)
- Notes: Software updates can address misinterpretations of sensor data.
Transmission replacement (extreme case)
- Parts: transmission and related components (new or reman)
- Labor: substantial (often 6–12 hours or more)
- Total: typically $2,000–$5,000+ depending on parts and labor
- Notes: Reserve for cases where the transmission has endured extensive damage or when sensor issues are a symptom of a larger failure.
DIY vs PROFESSIONAL
- DIY suitability:
- Easy/medium: Replacing the ISS/TSS sensor is usually within DIY capability if you have basic tools and are comfortable with transmission components. Visual inspection of the harness and connectors is a common DIY task.
- Moderate: Wiring harness repair can become complex; if you’re unfamiliar with transmission wiring diagrams and pinouts, professional help is advised.
- Complex/mandatory: Any confirmed or suspected TCM issues, software updates, or transmission fluid service that requires transmission pan work or torque conversion details should be performed by a pro.
- Professional considerations:
- Accurate diagnosis often requires a diagnostic scan tool with live data to observe the input speed sensor during operation.
- Proper torque specs, seal/gasket replacement (pan service), and fluid compatibility require proper toolsets.
PREVENTION
- Regular maintenance:
- Keep the transmission fluid at the correct level and use the manufacturer-approved Dexron VI fluid.
- Change transmission fluid per GM’s recommended interval (or sooner if severe driving conditions apply). Use the proper fluid type specified for your Cruze.
- Protect the transmission and wiring:
- Inspect the transmission area for leaks and wiring harness wear during maintenance intervals.
- Ensure the sensor and harness are clear of heat sources and debris; prevent contact with moving components.
- Monitor and respond to symptoms early:
- If you notice shifting irregularities, a check engine light, or speed readings that don’t align with vehicle speed, diagnose early to avoid further transmission wear or damage.
- Software/updates:
- If a dealer recommends a software update for the TCM or associated modules, consider having it performed to ensure the control system interprets sensor data correctly.
Bottom line for P0715 on a 2016-2019 Chevrolet Cruze
- Based on the provided data, there are no NHTSA complaints or recalls specifically tied to P0715 for this model/year in the dataset. No recalls found in NHTSA database.
- The most common, straightforward cause is a faulty input/turbine speed sensor or a wiring/connector issue. Start with a thorough visual inspection, electrical tests of the sensor circuit, and sensor replacement if needed. If tests point to the TCM or software, consult a professional for reflash or deeper diagnosis.
- Expect parts and labor cost in the general ranges listed above, with sensor replacement being the most likely affordable fix, and transmission replacement being a last-resort, high-cost option.