AutoCodes – Jeep – P0770 Jeep

P0770 Jeep Code - 4C Solenoid Circuit

Quick Answer

4C Shift solenoid valve is turned ON or OFF by the Transmission Control Module (TCM) in response to signals sent from the park/neutral position (PNP) switch, vehicle speed and Engine Control Module (ECM) (throttle opening). Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty 4C shift solenoid valve. 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: P0770 Jeep indicates 4C Solenoid Circuit.
Common causes: Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty 4C shift solenoid valve.
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.

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Code Popularity 12,321

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on May 08, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0770 Jeep Description

OBDII Code P0770 Jeep - 4C Solenoid Circuit - AutoCodes.com — P0770 Jeep Code - 4C Solenoid Circuit

What does this mean?

What are the Possible Causes of the DTC P0770 Jeep?

Low transmission fluid level
Dirty transmission fluid
Faulty 4C shift solenoid valve
4C Shift solenoid valve harness is open or shorted
4C Shift solenoid valve circuit poor electrical connection

How to Fix the DTC P0770 Jeep?

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 P0770 Jeep 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 P0770 Jeep code?

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Need Help with the Code?

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0770 Jeep Code

1. What does the OBDII code P0770 mean on a Jeep?

P0770 indicates an issue with the 4C solenoid circuit in the transmission, which controls specific gear shifts.

2. What are the common symptoms of the P0770 code on a Jeep?

Symptoms include rough or delayed shifting, transmission slipping, reduced fuel efficiency, and possibly the vehicle entering limp mode.

3. What causes the P0770 code to appear on a Jeep?

Common causes include a faulty 4C solenoid, damaged wiring or connectors, low or dirty transmission fluid, or a malfunctioning transmission control module (TCM).

4. Can driving with the P0770 code cause further damage?

Yes, ignoring the P0770 code can lead to further transmission damage and costly repairs if the issue is not resolved promptly.

5. How do you fix the P0770 code on a Jeep?

Repairs may involve replacing the 4C solenoid, repairing or replacing damaged wiring, cleaning the transmission fluid, or reprogramming the TCM.

6. How is the P0770 code diagnosed on a Jeep?

A mechanic will use a scan tool to confirm the code, inspect the wiring and solenoid for damage, and check the transmission fluid condition.

7. Can low transmission fluid cause the P0770 code?

Yes, low or dirty transmission fluid can cause improper solenoid function, triggering the P0770 code.

8. How much does it cost to fix the P0770 code on a Jeep?

The repair cost varies but can range from $150 to $500 or more, depending on whether the solenoid, wiring, or TCM needs repair or replacement.

9. Can I clear the P0770 code without fixing the issue?

Clearing the code without addressing the root cause may temporarily remove the warning, but the problem will likely return and could worsen over time.

10. Is the P0770 code common on all Jeep models?

The P0770 code can occur on various Jeep models with automatic transmissions, but its prevalence depends on the specific model and year.