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1996 Dodge Ram 1500 2WD P1762 & P1763 Fault: Lost 1st/2nd Gears, Now in Limp Mode - What Should I Do?

Model: 96 Ram Fault Code: P1762 Posted: 2007-06-20 14:41

I own a 1996 Dodge Ram 1500 2WD with a 5.2L V8 engine, currently located in the UK. Since experiencing gear shifting issues, I've been reading diagnostic codes P1762 and P1763 from my vehicle's ECM. The truck now defaults to third gear and fails to engage first or second gears — it operates in limp mode. I understand what these fault codes mean (P1762: Transmission Range Sensor Circuit Malfunction; P1763: Transmission Range Sensor Signal Out of Range), but I'm seeking a step-by-step troubleshooting procedure before considering replacing the transmission solenoids, which could cost £80–£100 each. My goal is to avoid unnecessary part replacements by first diagnosing potential root causes. Specifically: - Check voltage and signal integrity on relevant pins at the Powertrain Control Module (PCM). - Verify if the transmission range sensor or its wiring harness is faulty. - Evaluate whether the issue stems from a defective valve body, burnt clutches, or electrical faults in the transmission control system. I'm looking for reliable guidance, diagnostic procedures, and links to service manuals or technical resources that can help me troubleshoot this issue effectively without relying on expensive repairs. Any advice or references would be greatly appreciated. Best regards, T.

Related fault codes
P1762
Comments (12)
Anonymous 2007-06-21 06:50

The vehicle is likely in limp mode, stuck in second gear — not third. This suggests a transmission control issue. It's best to take it to a specialized transmission repair shop for diagnosis and testing.

Anonymous 2007-06-21 13:12

I don’t have access to a trusted transmission shop locally. Most mechanics I’ve spoken to require the vehicle to be held for several days, with repair costs often exceeding £700 (around $1400 USD).

Anonymous 2007-06-21 13:47

Disassembly, removal of the transmission, ordering parts, and rebuilding can take up to three days. However, a complete rebuild and reinstallation could be completed in just one day if done professionally.

Anonymous 2007-06-21 14:02

If the PCM is sending incorrect voltage signals, then no transmission rebuild may be necessary — the issue might lie in the sensor or wiring instead. I once had a mechanic suggest replacing a catalytic converter ($400) due to shifting issues; it turned out to be a faulty temperature sensor. This experience has made me cautious about over-reliance on standard garage diagnoses, especially for American vehicles that are often priced high in the UK. I appreciate your understanding of this concern.

Anonymous 2007-06-21 15:47

Do the local repair shops have access to the official code descriptions and diagnostic procedures for these codes?

Anonymous 2007-06-21 16:02

Some mechanics speculate that internal damage — such as a broken torque converter with debris — could be blocking transmission solenoids. In such cases, the converter would need to be opened, cleaned, and welded back together. However, this is not a common or recommended fix.

Anonymous 2007-06-21 16:04

Could you please post the official code descriptions? I’d like to cross-reference them with my service manual to confirm the exact fault interpretation. Also, does the speedometer function normally?

Anonymous 2007-06-21 16:13

Yes, the speedometer works perfectly. The codes are P1762 and P1763. This morning, it only engaged first gear — after waiting about half an hour, it defaulted to limp mode (I’m estimating third gear at around 60–65 mph with engine RPMs at 1800).

Anonymous 2007-06-21 16:19

Never repair a torque converter in place — always replace it entirely. This is a well-known industry best practice for reliability and safety.

Anonymous 2007-06-21 18:31

Definitely not! So, what would you recommend a qualified transmission shop do with this vehicle?

Anonymous 2007-06-22 00:17

Ah yes — that was my original question. What is the correct diagnostic path for this issue?

Anonymous 2007-06-22 06:38

Unfortunately, I don’t have access to the truck in front of me, and you seem unwilling to trust a professional with hands-on diagnostics. Unless you bring it to me or decide to perform the repair yourself, we’re limited in our ability to assist. Possible causes include valve body failure, burnt clutches, or wiring faults. You’ll need either a comprehensive service manual or an AllData subscription, along with proper tools and diagnostic equipment, to properly evaluate and resolve this issue.