P0878 Toyota Code - Transmission Fluid Pressure Sensor/Switch 'D' Circuit High
Quick Answer
The Engine Control Module (ECM) monitors the Transmission Fluid Pressure Sensor/Switch 'D'. Common causes include Faulty Automatic Transmission Fluid (ATF) Temperature Sensor Assembly, ATF Temperature Sensor harness is open or shorted, ATF Temperature Sensor circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P0878 Toyota indicates Transmission Fluid Pressure Sensor/Switch 'D' Circuit High.
- Common causes
- Common causes include Faulty Automatic Transmission Fluid (ATF) Temperature Sensor Assembly, ATF Temperature Sensor harness is open or shorted, ATF Temperature Sensor circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P0878 Toyota Description
What are the Possible Causes of the DTC P0878 Toyota?
- Faulty Automatic Transmission Fluid (ATF) Temperature Sensor Assembly
- ATF Temperature Sensor harness is open or shorted
- ATF Temperature Sensor circuit poor electrical connection
- Faulty Transmission Control Module (TCM)
How to Fix the DTC P0878 Toyota?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0878 Toyota code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
Need more information about the P0878 Toyota code?
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Information for Specific Toyota Models
- P0878 2006 Toyota Camry — Transmission Fluid Pressure Sensor/Switch 'D' Circuit High
- P0878 2007 Toyota Camry — Transmission Fluid Pressure Sensor/Switch 'D' Circuit High
- P0878 2008 Toyota Camry — Transmission Fluid Pressure Sensor/Switch 'D' Circuit High
- P0878 2009 Toyota Camry — Transmission Fluid Pressure Sensor/Switch 'D' Circuit High
- P0878 2010 Toyota Camry — Transmission Fluid Pressure Sensor/Switch 'D' Circuit High
- P0878 2011 Toyota Camry — Transmission Fluid Pressure Sensor/Switch 'D' Circuit High
Frequently Asked Questions about P0878 Toyota Code
What does the OBDII code P0878 mean for a Toyota?
P0878 indicates that the transmission fluid pressure sensor/switch 'D' is reporting a circuit voltage that is higher than expected, suggesting an issue with the sensor or related components.
What are the common symptoms of code P0878 in a Toyota?
Symptoms may include transmission slipping, harsh shifting, erratic gear changes, reduced fuel efficiency, or the transmission going into limp mode.
What causes the P0878 code on a Toyota?
Common causes include a faulty transmission fluid pressure sensor, wiring issues such as corrosion or shorts, connector problems, or issues within the transmission itself.
Can driving with code P0878 damage my Toyota?
Yes, prolonged driving with this code can cause further damage to the transmission, leading to more expensive repairs. It’s best to address the issue promptly.
How do I diagnose code P0878 in a Toyota?
Diagnosis typically involves scanning the ECM for additional codes, inspecting the transmission fluid pressure sensor, checking the wiring and connectors, and checking the transmission fluid level and condition.
How can I fix the P0878 code on my Toyota?
Repairs may involve replacing the transmission fluid pressure sensor, repairing or replacing damaged wiring or connectors, or addressing internal transmission issues if present.
Can a low transmission fluid level cause code P0878?
Yes, low or contaminated transmission fluid can cause incorrect pressure readings, potentially triggering the P0878 code.
How much does it cost to repair code P0878 on a Toyota?
Repair costs can vary widely depending on the root cause, ranging from $100-$300 for a sensor replacement to $1,000+ for internal transmission repairs.
Do I need special tools to fix code P0878 on a Toyota?
Basic tools like a multimeter and an OBDII scanner are often sufficient for diagnosing and repairing wiring or sensor issues, but advanced tools may be required for internal transmission repairs.
Can P0878 be caused by an electrical issue?
Yes, electrical problems such as shorts, corrosion, or damaged wiring in the sensor circuit can trigger the P0878 code.
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