P0736 Audi Code - Incorrect Reverse Ratio
Quick Answer
This diagnosis monitors actual gear position by checking the torque converter slip ratio calculated by Transmission Control Module (TCM) as follows: Torque converter slip ratio = A x C/B A: Output shaft revolution signal from revolution sensor B: Engine speed signal from Engine Control Module (ECM) C: Gear ratio determined as gear position which TCM supposes Common causes include Low transmission fluid level, Dirty transmission fluid, Shift solenoids. 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
- P0736 Audi indicates Incorrect Reverse Ratio.
- Common causes
- Common causes include Low transmission fluid level, Dirty transmission fluid, Shift solenoids.
- 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 P0736 Audi Description
Torque converter slip ratio = A x C/B
A: Output shaft revolution signal from revolution sensor
B: Engine speed signal from Engine Control Module (ECM)
C: Gear ratio determined as gear position which TCM supposes
What are the Possible Causes of the DTC P0736 Audi?
- Low transmission fluid level
- Dirty transmission fluid
- Shift solenoids
- Transmission mechanical problems
- Transmission hydraulic control circuit
How to Fix the DTC P0736 Audi?
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.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0736 Audi 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.
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Frequently Asked Questions about P0736 Audi Code
1. What does the OBDII code P0736 mean on an Audi?
Code P0736 indicates "Incorrect Reverse Ratio," meaning the transmission is not achieving the expected gear ratio when in reverse.
2. What are the common symptoms of code P0736 in an Audi?
Symptoms may include difficulty engaging reverse gear, slipping or hesitation in reverse, abnormal transmission noises, or the vehicle failing to move backward.
3. What causes the P0736 code on an Audi?
Common causes include low transmission fluid, a damaged reverse gear, faulty transmission solenoids, internal transmission issues, or incorrect transmission programming.
4. Can driving with P0736 damage my Audi?
Yes, continuing to drive with this code may cause further transmission damage, leading to costly repairs if the issue is not addressed promptly.
5. How can I diagnose the P0736 code on my Audi?
Start by checking the transmission fluid level and condition, inspecting wiring and connectors to the transmission, and scanning for additional related codes using an OBDII scanner.
6. How do I fix the P0736 code on an Audi?
Repairs may include topping off or replacing transmission fluid, replacing damaged solenoids, repairing internal transmission parts, or reprogramming the transmission control module (TCM).
7. Can low transmission fluid trigger the P0736 code?
Yes, low or contaminated transmission fluid can cause improper hydraulic pressure, leading to the incorrect reverse ratio.
8. How much does it cost to fix Audi code P0736?
Repair costs vary widely depending on the cause, ranging from a simple fluid change (~$100) to complete transmission repairs costing several thousand dollars.
9. Is a faulty transmission control module (TCM) a possible cause of the P0736 code?
Yes, a malfunctioning TCM may send incorrect signals to the transmission, resulting in an incorrect reverse gear ratio.
10. How can I prevent the P0736 code from occurring in my Audi?
Regular maintenance, including checking and changing transmission fluid, addressing transmission issues promptly, and ensuring proper programming of the TCM, can help prevent this code.
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