C1170 Mercedes-Benz Code - Steering Angle Sensor Zero Point Variation
Quick Answer
The Electronic Stability Program (ESP) is an active safety system which improves vehicle stability in all driving situations. Common causes include Re-Initialize Steering Angle Sensor. 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
- C1170 Mercedes-Benz indicates Steering Angle Sensor Zero Point Variation.
- Common causes
- Common causes include Re-Initialize Steering Angle Sensor.
- 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 C1170 Mercedes-Benz Description
It operates by actuating the brakes individually on one or more wheels on the front or rear axle. ESP stabilizes the vehicle when cornering, when braking or when coasting without power and holds it reliably in track.
ESP complements the familiar functions of the anti-lock brake system (ABS), acceleration slip regulation (ASR) and engine braking regulation (EBR).
The stability regulation function is superordinate to the ABS and ASR control systems. As well as actively intervening with the brakes, ESP also has an influence on engine/transmission management.
The Electronic Stability Program (ESP) includes the following system interplay:
ABS prevents the wheels from locking up during braking and thus maintains the steerability and directional control of the vehicle during deceleration.
ASR prevents the drive wheels from spinning while driving. It also improves directional control with better traction across the entire speed range.
EBR reduces brake slip at the drive wheels during deceleration and ensures directional control.
ESP prevents the vehicle from breaking away when it is oversteered or understeered. In all situations, it ensures that the vehicle does not deviate from the course specified by the driver (within the bounds of physical limits). Brake forces are produced selectively at the individual wheels to correct this.
What are the Possible Causes of the DTC C1170 Mercedes-Benz?
- Re-Initialize Steering Angle Sensor
How to Fix the DTC C1170 Mercedes-Benz?
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
In individual cases, it is possible for the ETC control module with part number 030 545 23 32 (EGS 52 Q01 or SW 14/01) to send erroneous data on the CAN-C bus after switching on the ignition
- One pressure sensor on master brake cylinder: ESP MK25 (new)
- Two pressure sensors on master brake cylinder: ESP MK20 (old)
A further recognition characteristic on the MK25 system is the new combined yaw rate/lateral acceleration sensor. The electronic stability program (ESP) receives this data and then erroneously assumes that the steering angle sensor signal came from the steering tube module rather than the combined yaw rate/lateral acceleration sensor, However, since the steering tube module is not currently installed in model 203, the ESP control module does not receive any data and stores the DTC specified in the document. Conversion from MK20 to MK25 was accomplished on approx. 08/2001, however, some preliminary vehicles were produced It is therefore important to differentiate on the basis of the number of pressure sensors present on the master brake cylinder.
2. Remove/install/replace ETC control module
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What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the C1170 Mercedes-Benz 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 C1170 Mercedes-Benz Code
1. What are the common symptoms of OBDII code C1170 in a Mercedes-Benz related to the Steering Angle Sensor Zero Point Variation?
The common symptoms include the ABS warning light staying illuminated, stability control issues, and potential loss of power steering assistance.
2. What typically causes the OBDII code C1170 in a Mercedes-Benz?
The code C1170 is usually triggered by a discrepancy between the actual steering angle and the expected steering angle, often due to a fault in the steering angle sensor or its calibration.
3. How can I diagnose the Steering Angle Sensor Zero Point Variation issue in my Mercedes-Benz?
Professional diagnostic tools can help read the OBDII code C1170 and perform a calibration procedure to reset the steering angle sensor to its zero point.
4. Is it safe to continue driving my Mercedes-Benz with the C1170 error code present?
It is not recommended to drive the vehicle with the C1170 code active, as it can affect the operation of important safety systems like ABS and stability control.
5. Can I reset the Steering Angle Sensor calibration myself to clear the C1170 error code?
While it is possible to attempt a sensor calibration reset yourself, it is advisable to consult a qualified technician to ensure the procedure is done correctly and to rule out any underlying issues.
6. How much does it typically cost to repair the Steering Angle Sensor Zero Point Variation issue in a Mercedes-Benz?
The cost of repairing the C1170 code can vary depending on the exact cause of the problem, but it may involve sensor replacement, calibration, or software updates, which can range from a few hundred to over a thousand dollars.
7. Are there any DIY tips or tricks to prevent the recurrence of the C1170 error in my Mercedes-Benz?
Regularly checking the steering system for any physical damage or loose connections, and ensuring proper wheel alignment can help prevent issues with the steering angle sensor and reduce the likelihood of the C1170 code appearing.
8. Can extreme driving conditions or rough roads contribute to triggering the Steering Angle Sensor Zero Point Variation code in a Mercedes-Benz?
Driving on rough roads or harsh conditions can potentially impact the steering angle sensor calibration, leading to the activation of the C1170 code. It's essential to drive cautiously to avoid unnecessary stress on the steering system.
9. How long does it usually take to repair the Steering Angle Sensor Zero Point Variation issue in a Mercedes-Benz?
The repair time can vary based on the exact cause of the problem and the availability of parts. In general, it may take a few hours to a day for a qualified technician to diagnose and fix the issue.
10. Is the Steering Angle Sensor Zero Point Variation problem covered under any warranty for Mercedes-Benz vehicles?
Depending on the vehicle's age and warranty status, the repair for the C1170 code may be covered under the manufacturer's warranty or extended warranty. It's recommended to check with the dealership or your warranty provider for specific coverage details.
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